R. M. Williams
发表
F. Pipers,
G. Fackelman,
C. Becker,
1992,
Equine veterinary journal.
R. M. Williams,
1975,
Australasian radiology.
J. Mangels,
R. M. Williams,
1983
.
A. Parry,
Charles McCollum,
C. Mccollum,
1997,
British Journal of Surgery.