Alamprese C., Foschino R.: L'era dei probiotici. Estratto dalla rivista "Tecnologie alimentari". 

Anderson IH, Levine AS, Levitt MD. Incomplete absorption of the carbohydrate in all-purpose flour. N Engl J Med. 1981;304:891-892. 

Anderson JW; Gilliland SE; Effect of fermented milk containint Lactobacillus acidophilus L1 on serum cholesterol in hypercholesterolemic humans. J Am Coll Nutr 1999 Feb; 18(1):43-50. 

Arihara K, Tobo T, Adachi S. Int J Food Microbiol 1990;11:127-34. Immunofluorescence microscopic studies on distribution of L. kefiranofaciens and L. kefir in kefir grains. 

Babina, N.A Effect of washing of kefir grains on starter microflora.. Molochnaya Promyshlennost' (5) 8-10 (1973) [Ru] [Vses. Nauchna-issled, Inst. Molochnoi Promyshlennosti, Moscow, Former USSR] 

Beatrice Trum Hunter's FACT/BOOK on Yogurt, Kefir & Other Milk Cultures [1973] Library of Congress Card Number: 72-87858. ISBN: 87983-033-175 

Bottazzi V., Zacconi C., Sarra P.G., Dallavalle P., Parisi M.G.: Microbiologia del kefir, chimica e tecnologia. Estratto dalla rivista "L'industria del latte" Anno XXX, N. 1, Fascicolo 4, Gennaio-Marzo 1994. 

Bottazzi V.: I latti fermentati. Aspetti biochimici, tecnologici, probiotici e nutrizionali. Istituto Danone. 

Briet F, Pochart P. Marteau P, Flourie B, Arrigoni E, Rambaud JC. Improved clinical tolerance to chronic lactose ingestion in subjects with lactose intolerance: a placebo effect? Gut. 1997;41:632-635. 

Bugrova, V. I.; Bursak, G. Z.; Rudykh, K. I.; Muzyukina, T. M.; Fel'dberg, F. L.; Shlyakhova, V. V.; Zhelikhovskaya, F. M. [1969]. Bacteriological evaluation of kefir. Moskovskii Nauchno-issled. Inst. Gigieny imeni F. F. Erismana, Moscow, USSR. Gigiena i Sanitariya, 34 (7) 91-92 [Russian Document] 

Carroccio A, Montalto MG, Notarbatolo A, Lactase Deficiency Study Group. Lactose Intolerance and self-reported milk intolerance: Relationship with lactose maldigestion and nutrient intake. J Am Coil Nutr. 1998;17:631-636. 

Charteris W. P., Kelly P. M., Morelli L., Collins J. K., Gradient diffusion antibiotic susceptibility testing of potentially probiotic lactobacilli, J. of food protection, vol. 64, No. 12 (2001), pg. 2007 – 14 

Charteris W. P., Kelly P. M., Morelli L., Collins J. K., Selective detection, enumeration and identification of potentially probiotic Lactobacillus and Bifidobacterium species in mixed bacterial populations, I. J. of food microbiology, 35 (1997), pg. 1 – 27 Cogan T. M., Accolas J. P. (1996), Dairy starter cultures, Wiley-VCH, New York 

Crook, W. The Yeast Connection, Prof. Books., 1986.
Isolauri et al. "Probiotics: effects on immunity." Am J. Clin Nutr 2001; 73 (suppl);444S-50S. 

Dave R. I., Shah N. P., Evaluation of media for selective enumeration of Streptococcus thermophilus, Lactobacillus delbrueckii ssp. bulgaricus, Lactobacillus acidophilus and Bifidobacteria, J. dairy science, 79 (1996), pg. 1529 – 1536 

Dawson-Sanders B, Trapp RG. Bas/c and Clinical Biostatistics. 2nd ed. Norwalk, CT: Appleton and Lange; 1994:105-106. 

De Vrese M, Keller B, Barth CA. Enhancement of intestinal hydrolysis of lactose by microbial [beta]-galactosidase (EC of kefir. Br J Nutr. 1992;67:67-75. 

Dehkordi N, Rao DR, Warren AP, Chawan CB. Lactose malabsorption as influenced by chocolate milk, skim milk, sucrose, whole milk, and lactic cultures. J Am Diet Assoc. 1995;95:484-486. 

Dmitrichenko, M.I
Microstructure and composition of kefir grains [Lecture]. pp. 43-46 (1974) [Ru] [Kemerovskii Tekh. Inst. Pishchevoi Promyshlennosti, Kemerovo, Former USSR]
Diniz RO, Garla LK, Schneedorf JM, Carvalho JC.
Pharmacol Res. 2003 Jan;47(1):49-52. Study of anti-inflammatory activity of Tibetan mushroom, a symbiotic culture of bacteria and fungi encapsulated into a polysaccharide matrix. 

Drewek, Z.; Czarnocka-Roczniokowa, B.1986. Microbiological processes in folacin synthesis in kefir. Acta Alimentaria Polonica 12 (1) 39-45. Dep. of food Eng. & Biotch., Argric. & Tch. Uni., Olsztyn Poland 

Encyclopaedia of Food Science, Food Technology, and Nutrition [1993] [pp. 1804-1808] Edited by R. Macrae, R.K. Robinson, M.J. Sadler 

EngelG., Krusch U., Teuber M.: Composizione microbiologica del kefir. I. Yeasts. Milchw, (1986), 41, 418-421. 

Ewing W., Haresign W. (1989), Probiotic UK, Chalcombe Publications, Marlow 

Fuller R. (1992), Probiotics. The scientific basis, Chapman & Hall, London
GARROTE Graciela L., ABRAHAM Analia G., DE ANTONI Graciela L. [2001] Chemical and microbiological characterisation of kefir grains. Journal of dairy research. vol. 68, No 4 , pp. 639 - 652 

Gibson, Saavedra, MacFarlane et al. Probiotics and Intestinal Infections. Probiotics 2: Applications and Practical Aspects. 1997, Chapman & Hall, (10). 

Gilliland S. E. (2001), Applied dairy microbiology, Marth & Steele, New York 

Goldin, Health Benefits of Probiotics. British Journal of Nutrition (1998), 80, Suppl. 2. S203-s207 

Goldin, B.R., L. Seson, J. Dwyer, M. Sevfon, and L. Gorbach. "Effects of diet and Lactobacillus acidophilus supplements on human fecal bacterial enzymes." National Cancer Institute, 64, 255-261, 1980. 

Goldin, B.R. The metabolic activity of the intestinal microflora and its role in colon cancer: Lactobacillus and other factors that alter intestinal metabolic activity. Nutrition Today 1996, December. 

Guzel-Seydim Z, Seydim AC, Greene AK. Feb. 2000. Organic acids and volatile flavor components evolved during refrigerated storage of kefir. Journal of Dairy Science. Department of Animal & Veterinary Sciences, Clemson University, SC 29634-0361, USA. 

Hallé, C., Leroi, X. Dousset & M. Pidoux 1994. Les Kéfirs : des associations bactéries lactiques-levures. In Roissart, De H., Luquet, F.M. [Eds], Bactéries lactiques: Aspects fondamentaux et technilogiques. Vol. 2. Uriange, France, lorica, pp: 169-182 

Harrigan W. F. (1998), Laboratory methods in food microbiology, Academic press, San Diego 

Hassan A. N., Frank J. F. (2001), Applied dairy microbiology, Marth & Steele, New York 

Hertzler SR, Huynh B-C L, Savaiano DA. How much lactose is low lactose? J Am Diet Assoc. 1996;96:243-246. 

Hertzler SR, Savalano DA. Colonic adaptation to daily lactose feeding in lactose maldigesters reduces lactose intolerance. Am J Clin Nutr. 1996;64:232-236. 

Holum JR. Fundamentals of General, Organic, and Biological Chemistry. 2nd ed. New York, NY: John Wiley and Sons; 1982:111. 

International Journal of Systematic Bacteriology 44 (3) 435-439 [1994] 

Jay J. M. (1996), Modern food microbiology, Chapman & Hall, New York 

Kolars JC, Levitt MD, Aouji M, Savaiano DA. Yogurt: An autodigesting source of lactose. N Engl J Med. 1984;310:1-3. 

Korleva, N.S. ; Babina. N.A.
Recommendations for the cultivation of kefir grains and the production of kefir starter and kefir Molochnaya Promyshlennost'(8), 43-44 (1975) [Ru] [Vses. Nauchna-issled, Inst. Molochnoi Promyshlennosti, Moscow, Former USSR] 

Lee Y., Nomoto K., Salminem S., Gorbach S. L. (1999), Handbook of probiotics, John Wiley & sons inc., New York 

Levitt MD, Gibson GR, Christi SU. Gas metabolism in the large intestine. In: Gibson GR, Macfarlane GT, eds. Human Colonic Bacteria: Role in Nutrition, Physiology, and Disease. Boca Raton, FL: CRC Press, Inc.; 1995;135-154. 

Lifeway Foods, Inc. Lifeway kefir research reports. Available at: Accessed March 6, 2003. 

Lin M-Y, DiPalmaJA, Martini MC, Gross CJ, HarlanderSK, Savaiano DA. Comparative effects of exogenous lactase (J3-galactosidase) preparations on in vivo lactose digestion. Dig Dis Sci. 1993;38:2022-2027. 

Loretana T. , J.F Mosterta and B.C. Viljoen [2003] Microbial flora associated with South African household kefir. S. Afr. J. Sci. Vol. 99 No. ½ 

Martini MC, Bollweg GL, Levitt MD, Savalano DA. Lactose digestion by yogurt [beta]-galactosidase: Influence of pH and microbial cell integrity. Am J Clin Nutr. 1987;45:432-436. 

Martini MC, Kukielka D, Savaiano DA. Lactose digestion from yogurt: influence of a meal and additional lactose. Am J C/in Nutr. 1991;53:1253-1256. 

Martini MC, Savalano DA. Reduced intolerance symptoms from lactose consumed during a meal. Am J Clin Nutr. 1988;47:57-60. 

Mc Can T., Egan T., Weber G. H., Assay procedures for commercial probiotic cultures, J. of food protection, vol. 59, No. 1 (1996), pg. 41 – 45 

Microorganisms in Processing of Dairy Products. [pp. 284] 

Moinas, M.; Horisberger, M.; Bauer, H.
The structural organization of the Tibi grains as revealed by light, scanning and transmission microscopy. (1980) Archives of Microbiology (128), 157-161 

Molska, I. ; Kocon, J. ; Zmarlicki, S. [1980] Electron microscopy studies on structures and microflora of kefir grains. Acta Alimentaria Polonica. 6 (3) 145-154 [Dep. of Food Tech., Warsaw Agric. Univ. Warsaw, Poland] 

Murofushi M, Mizuguchi J, Aibara K, Matuhasi T, et al.
Immunopharmacology 1986 Aug;121:29-35. Immunopotentiative effect of polysaccharide from kefir grain, KGF-C, administered orally in mice. 

Mustapha A, Jiang T, Savalano DA. Improvement of lactose digestion by humans following ingestion of unfermented acidophilus milk: Influence of bile sensitivity, lactose transport, and acid tolerance of Lactobacillus acidophilus. J Dairy Sci. 1997;80:1537-1545. 

Newcomer AD, Park HS, O'Brien PC, McGill DB. Response of patients with irritable bowel syndrome and lactase deficiency using unfermented acidophilus milk. Am J Clin Nutr. 1983;38:257-263. 

Oleinichenko EV, Mitrokhin SD, Minikov VE, et al. [1999] Effectiveness of aciprole in prevention of enteric dysbacteriosis due to antibacterial therapy. Antibiot Khimioter ; 44:23-5 

Onwulata CI, Rao DR, Vankineni P. Relative efficiency of yogurt, sweet acidophilus milk, hydrolyzed-lactose milk, and a commercial lactase tablet in alleviating lactose maldigestion. Am J Clin Nutr. 1989;49:1233-1237. 

Ottogalli G., Galli A., Resmini P., Volonterio G.: Microbiologia e composizione chimica e ultrastrutture dei grani di kefir. Ann. Microbiol. Enzim., (1973), 23, 109-121. 

Pelletier X, Laure-Boussuge S, Donazzolo Y. Hydrogen excretion upon ingestion of dairy products in lactose-intolerant male subjects: Importance of the live flora. Eur J Clin Nutr. 2001;55:509-512. 

Perman JA. Digestion and absorption of fruit juice carbohydrates. J Am Colt Nutr. 1996:15:S12-S17. 

Pidoux, M.; Brillouet, J. M.; Quemener, B. Biotechnology Characterization of the polysaccharide from a Lactobacillus Brevis and from sugary kefir grains.
Letters 10 (6) 415-420 (1988) [Lab. de Genie Alimentaire, ENITTIAA, Chemin de la Geraudiere, 44072 Antes Cedex, France] Pribila BA, Hertzler SR, Martin BR, Weaver CM, Savalano DA. Improved lactose digestion and intolerance among African-American adolescent girls fed a dairy-rich diet. J Am Diet Assoc. 2000;100:524-528. 

Ray B. (2001), Fundamental food microbiology, CRC Press, Boca Raton 

Rener, E & Renz-Schaven, 1986. Nahrwerttabellen für milch und milchprodukte. Verlag B. Renner. Köhner K. G. Gieben, Germany 

Roberts D., Hooper W., Greenwood M. (1995), Practical food microbiology, Public health laboratory service, London 

Rosi J.: I microrganismi del kefir: gli aceto-batteri. Sci. Tecn. Latt.-Cas., (1978), 29, 221-227. 

Rosi J.: I microrganismi del kefir: i lieviti. Sci. Tecn. Latt.-Cas., (1978), 29-59-67. 

Rosi J., Rossi J.: I microrganismi del kefir: i fermenti lattici. Sci. Tecn. Latt.-Cas., (1978), 29, 291-305. 

Rossi J., Gobetti M.: Uso di multicomponenti per produzione continua del kefir. Ann. Microbiol. Enzim., (1991), 41, 223-226. 

Salminem S., Von Wright A. (1998), Lactic acid bacteria, Marcel Dekker Inc., New York 

Saloff-Coste CJ. Kefir. Danone World Newsletter 1996;11:1-19. Available at: & Seq=1. Accessed March 6, 2003. 

Safonova TIa, Iatsyk GV, Iurkov IuA, et al. Effect of different types of feeding on the fatty acid makeup of the blood serum in premature infants. Vopr Pitan 1979; 6 : 44 - 9 

Sanders M. E., Klaenhammer T. R., The scientific basis of Lactobacillus acidophilus functionality as a probiotic, J. dairy science, 84 (2001), pg. 319 - 331 

Sahi T. Genetics and epidemiology of adult-type hypolactasia. Scan J Gastroenterol. 1994;29(suppl)202:7-20. 

Saltzman JR, Russell RM, Golner B, Barakat, Dallal GE, Goldin BR. A randomized trial of Lactobacillus acidophilus BG2FO4 to treat lactose intolerance. Am J Clin Nutr. 1999;69:140-146. 

Savaiano DA, AbouElAnouar A, Smith DE, Levitt MD. Lactose malabsorption from yogurt, pasteurized yogurt, sweet acidophilus milk, and cultured milk in lactase-deficient individuals. Am J Clin Nutr. 1984;40:1219-1223. 

Sehert. K. The Gardin Within, Health World Magazine, Burlingame, CA. 1989. 

Shah N. P., Probiotic bacteria: selective enumeration and survival in dairy foods, J. dairy science, 83 (2000), pg. 894 – 907 

Shiomi M, Sasaki K, Murofushi M, Aibara K, et al.
Jpn J Med Sci Biol 1982 Apr;35:75-80. Antitumor activity in mice of orally administered polysaccharide from Kefir grain. 

Shiomi M, Aibara K, Murofushi M, et al.
Jpn J Med Sci Biol 1983 Feb;36:49-53. Effect of orally administered polysaccharide from kefir grain on delayed-type hypersensitivity and tumor growth in mice. 

Shimon Arras et al. all about kefir (2009) n°I Ed. Sanni 

Steven R. Hertzler, Shannon M. Clancy "Kefir improves lactose digestion and tolerance in adults with lactose maldigestion." (Research). Journal of the American Dietetic Association, May, 2003, 

Strocchi A, Corazza G, Ellis CJ, Gasbarrini G, Levitt MD. Detection of malabsorption of low doses of carbohydrate: accuracy of various breath [H.sub.2] criteria. Gastroenterology. 1993;105:1404-1410. 

Suarez FL, Savalano DA, Levitt MD. A comparison of symptoms after the consumption of milk or lactose-hydrolyzed milk by people with self-reported severe lactose intolerance. N Engl J Med. 1995;333:1-4. 

Suarez FL, Savalano D, Arbisi P, Levitt MD. Tolerance to the daily ingestion of two cups of milk by individuals claiming lactose intolerance. Am J Clin Nutr. 1997;65:1502-1506. 

Sukhov SV, Kalamkarova LI, Il'chenko LA, et al. [1986] Microflora changes in the small and large interstines of chronic enteritis patients on diet therapy including sour milk products. Vopr Pitan ; 4:14-7 

Swaggerty DL, Walling AD, Klein RM. Lactose intolerance. Am Fam Physician. 2002;65:1845-1850, 1855-1856. 

Tamine A. Y., Robinson R. K. (1999), Yoghurt: science and technology, Woodhead publishing limited, Cambridge 

Tannock G. W. (1999), Probiotics. A critical review, Horizon scientific press, Norfolk [20] 

Toba, T.; Arihara, K.; Adachi, S. [1990] Distribution of microorganisms with particular reference to encapsulated bacteria in kefir grains. International Journal of Food microbiology. 10 (3/4) 219-224. [Lab. Of Anim. Products Tech., Fac. Of Agric., Tohoku Univ., Tsutsumidori-Amamiyamachi 1-1, Aobaku, Sendai 981, Japan] 

Trenev, Natasha. Probiotics, Nature's Internal Healers, 1998, Penguin; 125-127.
Metchnikoff, A, The Prolongation of Life. Arna Press, N.Y. 1908 (1977 reprint). 

Vanderhoof, Jon. Probioitics and Intestinal Imflammatory Disorders in Infants and Children J of Ped. 
Gastroenterology and Nutr, March 2000, S34. 

Vayssier J.: Analisi qualitativa e quantitativa del kefir. Rev. Lait. Franc., (1978), n. 361 , 73/75. 

Vesa TH, Korpela RA, Sahi T. Tolerance to small amounts of lactose in lactose maldigesters. Am J Clin Nutr. 1996;64:197-201. 

Vrese, et al. "Probiotics - Compensation for lactase insufficiency." Am J Clin Nutr 2001; 73 (suppl);421S-9S. 

Williams & Wilkins (1986), Bergey's manual of systematic bacteriology, Baltimore 

Wolever TMS, Jenkins DJA, Jenkins AL, Josse RG. The glycemic index: Methodology and clinical implications. Am J Clin Nutr. 1991;54:846-854. 

Yakugaku Zasshi 1992 Jul;112:489-95. Pharmacological study on kefir-a fermented milk product in Caucasus. I. On antitumor activity (1). Kubo M, Odani T, Nakamura S, Tokumaru S, Matsuda H, et al. Faculty of Pharmaceutical Sciences, Kinki University, Osaka, Japan. 

Zacconi C., Parisi M.G., Sarra P.G., Dallavalle P., Bottazzi V.: Esclusione competitiva di Salmonella in pulcini mediante somministrazione di kefir. (1994). 

Zubillaga M, Weill R, Postaire E, Goldman C, Caro R, Boccio J. [2001] Effects of probiotic and functional foods and their use in different diseases. Nutritional Research 21 569-579 [Publication available online below]