8GOST, P 52409 - 2005. Production of non - alcoholic and mildly alcoholic products[ S]. Russia: Russia Standards Press,2005.
9Elena Dlusskaya, Andr6 Jansch, Clarissa Schwab, et al. Microbial and chemical analysis of a kvass fermentation [ J ]. Eur Food Res Technol, 2008,227:261-266.
10Katz Sandor. Wild fermentation [ M ]. White River Junction, VA: Chelsea Green Publishing Company, 2003 : 121.