V. Petersen
发表
Lartey Godwin Lawson,
H. B. Simonsen,
L. G. Lawson,
1995
.
K. Vestergaard,
B. Recén,
V. Petersen,
1990
.
M. Baltzer,
L. Christensen,
V. Petersen,
2007,
Animal Welfare.