R Roberts
发表
John W. Fisher,
A. W. Pense,
R Roberts,
1977
.
H Hausammann,
R Roberts,
J N Fisher,
1977
.
John W. Fisher,
G. R. Irwin,
H Hausammann,
1980
.
Ben T. Yen,
John W. Fisher,
A. W. Pense,
1981
.
John W. Fisher,
A. W. Pense,
R Roberts,
1980
.
John W. Fisher,
A. W. Pense,
R Roberts,
1975
.
R Roberts,
R. Roberts,
R. Hertzberg,
1971
.
G. R. Irwin,
R Roberts,
John W. Fisher,
1976
.
Robert S. Vecchio,
R Roberts,
D. A. Jablonski,
1985
.