Robert Cogan
发表
Robert Cogan,
1986,
ICMC.
Robert Cogan,
Corbin Fowler,
1992
.
Robert Cogan,
R. Cogan,
1976,
Notre Dame J. Formal Log..
John Strawn,
Robert Cogan,
1986
.
Robert Cogan,
R. Cogan,
1984
.
Robert Cogan,
R. Cogan,
1988
.
Robert Cogan,
1998
.
Robert Cogan,
Pozzi Escot,
1976
.