R. Holtkamp
发表
L. Morin,
A. Reid,
R. Holtkamp,
2008
.
P. Downey,
J. Ireson,
R. Holtkamp,
2007
.
R. Forrester,
W. Wanjura,
R. Adair,
2009,
Bulletin of entomological research.
A. Sheppard,
B. Grace,
J. Ireson,
2004
.
H. S. Jacob,
J. Dodd,
J. Moore,
2002
.
J. Hosking,
B. J. Wilson,
J. Swarbrick,
1993
.
R. Adair,
R. Holtkamp,
1999
.
A. Clift,
R. Holtkamp,
1993
.
M. Day,
R. Holtkamp,
P. Jones,
2016
.
M. Day,
W. Palmer,
R. Holtkamp,
2015
.
Day,
R. Holtkamp,
P. Jones,
2014
.
J. I. Thompson,
R. Holtkamp,
1985
.
R. Adair,
P. Edwards,
R. Holtkamp,
1999
.
J. Hosking,
L. Morin,
J. Scott,
2021,
Biological Control.
R. Holtkamp,
A. Bishop,
1980
.
R. Holtkamp,
R. Holtkamp,
1990
.
A. Clift,
R. Holtkamp,
K. Morthorpe,
1992
.
M. Day,
A. McConnachie,
R. Holtkamp,
2023,
SSRN Electronic Journal.