R. Bill

发表

D. V. Van Sickle, W. Blevins, K. Whitehair, 1992, Veterinary surgery : VS.

S. B. Adams, C. C. Wu, T. Lescun, 2000, American journal of veterinary research.

R. Bill, P. McConaghy, R. Stewart, 2002, Clinical otolaryngology and allied sciences.