2Yasutaka Morita, Tetsuya Nakamura, Quamrul Hasan. Cohl- Active Enzymes from Cold - Adapted Bacteria[J]. Journal of the American Oil Chemists Society. 1997, 74 (4): 441-444.
7Zhang S W X, Ichimura T,et al. Cenetic engineering of white shochukoji to achieve higher levels of acid-Stable α -amylase and glucoamylase and other properties when used for shochu making on a laboratory scale[J]. Insti Brew,1999,105(3):309-314.