Gordon D. Welford
发表
William W. Malcolm,
Buster E. Kelley,
Gordon D. Welford,
1965
.
Gordon D. Welford,
Joseph S. Boland,
1975
.
Gordon D. Welford,
William W. Malcolm,
William H. Boykin,
1974
.
Gordon D. Welford,
1982
.