C. Parker
发表
W. Ward,
C. Parker,
1999
.
F. Henson,
C. Parker,
P. Cockcroft,
2000,
Veterinary Record.
E. Lloyd,
J. Huxley,
B. Strugnell,
2009,
Veterinary Record.
R. Ryan,
S. Willoughby,
H. W. Ferguson,
2000,
Veterinary Record.