W. Ruland
发表
J. Cherry,
W. Ruland,
S. Feenstra,
1991
.
R. Gillham,
J. Cherry,
W. Ruland,
1989
.
C. C. Smart,
W. Ruland,
2001
.
S. Worthington,
C. C. Smart,
W. Ruland,
2012
.