Ryan P. A. Bettens
发表
Markus Behnke,
Ivan R. Medvedev,
Manfred Winnewisser,
2006
.
Thomas M. Goyette,
Frank C. De Lucia,
Douglas T. Petkie,
1997
.
Ryan P. A. Bettens,
Adrian M. Lee,
R. Bettens,
2007
.
Michael A. Collins,
Ryan P. A. Bettens,
R. P. Bettens,
1999
.
Michael A. Collins,
Ryan P. A. Bettens,
R. P. Bettens,
1998
.
Michael A. Collins,
Ryan P. A. Bettens,
R. P. Bettens,
1999
.
Michael A. Collins,
Ryan P. A. Bettens,
R. P. Bettens,
2002
.
Michael A. Collins,
Ryan P. A. Bettens,
R. P. Bettens,
2001
.
Michael A. Collins,
Ryan P. A. Bettens,
R. P. Bettens,
1998
.