Afonso, I. M., and Joao, M. M. 1999. Rheological monitoring of structure evolution and development in stirred yoghurt. J. Food Eng. 42, 183–190.
Akin, N., and Rice, P. 1994. Main yoghurt and related products in Turkey. Cultured Dairy Products J. 29(3): 23.
Anon. 1991. Doogh: Characteristics and examination. ISIRI. Standard Number 2453. (in Farsi)
Farhoodi, F. 1998. Milk Technology. Research and Education Jahad of Tehran Corporation Press. (in Farsi)
Foroughinia, S., Abbasi, S., Himidi Esfahani, Z. 2007. Effect of Individual and Combined Addition of Salep, Tragacantin and Guar Gums on the Stabilization of Iranian Doogh. Iranian J. Nutrition Sci. Food Technol. 2, 15-25. (in Farsi)
Fox, P. F. 2003. The major constituents of milk. Chapter 1 in Smit, G. (Ed.), Dairy Processing: Improving Quality.
Keogh, M. K. and O’Kennedy, B. T. 1998. Rheology of stirred yogurt as affected by added milk fat, protein and hydrocolloids. J. Food Sci. 63(1): 108-112
Kiani, H., Mousavi, S. M. and Emam-Djomeh, Z. 2008. Rheological properties of Iranian yoghurt drink, Doogh. Inter. J. Dairy Sci. 3(2):71-78.
Koksoy, A. and Kilic, M. 2003. Effects of water and salt level on rheological properties of Ayran, a Turkish yoghurt drink. Inter. Dairy J. 13, 835-839.
Koksoy, A., Kilic, M. 2004. Use of hydrocolloids in textural stabilization of a yoghurt drink, Ayran. Food Hydrocol. 18, 593-600.
Laurent, M. A. and Boulenguer, P. 2003. Stabilization mechanism of acid dairy drinks (ADD) induced by pectin. Food Hydrocol. 17, 445-454.
McClements, D. J. 1999. Food Emulsions: Principles, Practice and Techniques. CRC Press LLC.
Sedlmeyer, F., Brack, M., Rademacher, B. and Kulozik, U. 2004. Effect of protein composition and homogenisation on the stability of acidified milk drinks. Inter. Dairy J. 14, 331–336.
Smit, G. 2003. Dairy Processing: Improving Quality. CRC Press LLC.
Tamime, A. Y. and Robinson, R. K. 1999. Yoghurt Science and Technology. Woodhead Publishing Ltd.
van Hooydonk, A. C. M., Boerrigter, I. J. and Hagedoorn, H. G. 1986. pH-induced physico-chemical changes of casein micelles in milk and their effect on renneting: 2. Effect of pH on renneting of milk. Netherlands Milk and Dairy J. 40, 297-313.
Vasbinder, J., Peter, J., van Mil, J. M., Bot, A. and de Kruif, K. G. 2001. Acid-induced gelation of heat-treated milk studied by diffusing wave spectroscopy. Colloids and Surfaces B: Biointerfaces. 21, 245-250.