William M. Schaffer
发表
Bruce E. Kendall,
William M. Schaffer,
Lars Folke Olsen,
1994
.
Vikas Rai,
William M. Schaffer,
W. Schaffer,
2001
.
William M. Schaffer,
W. Schaffer,
2008
.
William M. Schaffer,
Lars Folke Olsen,
L. Olsen,
1997
.
William M. Schaffer,
L. Olsen,
W. Schaffer,
2001
.
William M. Schaffer,
Lars Folke Olsen,
L. Olsen,
1995
.
William M. Schaffer,
W. Schaffer,
1984,
The American Naturalist.
William M. Schaffer,
W. Schaffer,
1984
.
William M. Schaffer,
Gordon A. Fox,
W. Schaffer,
1989
.
William M. Schaffer,
W. Schaffer,
1974
.
William M. Schaffer,
W. Schaffer,
G. Krukonis,
1991
.
William M. Schaffer,
Lars Folke Olsen,
David J. Graser,
1988
.
William M. Schaffer,
Aaron A. King,
A. King,
2001
.
Mark Kot,
William M. Schaffer,
M. Kot,
1985
.
William M. Schaffer,
Egbert G. Leigh,
E. Leigh,
1976
.
William M. Schaffer,
W. Schaffer,
D. W. Zeh,
1983
.
Mark Kot,
William M. Schaffer,
M. Kot,
1984
.
Bruce E. Kendall,
William M. Schaffer,
B. Kendall,
1993
.
Mark Kot,
William M. Schaffer,
Aaron A. King,
1996
.