8Zheng Xiao - li. Superfine Comminution Principle [M]. Craftwork Equipment and Application, Peking: China Architecture Industry Publishing Company, 1993, 400.
9E.Q. Sunny - Robers. E. T. Otunola. B. T. Iwakun. An evaluation of some quality parameters of a laboratory - prepared fermented groundnut milk. [J]. Eur Food res Technol, 2004, (218): 452 -455.