6Nelson K E,Pell A N,Schofield P,et al.Isolation and characterization of an anaerobic ruminal bacterium capable of degrading hydrolyzable tannins.Appl.Environ.Microbiol,1995,61(9):3293-3298.
7Odenyo A A,Osuji P O.Tannin-tolerant,ruminal bacteria from East African ruminants.Can.J.Microbiol.,1998,44 (9):905-909.