George E. Johnson
发表
G. Johnson,
George E. Johnson,
1997
.
Frank P. Stafford,
F. Stafford,
G. Johnson,
1974
.
Frank P. Stafford,
F. Stafford,
G. Johnson,
1974,
Journal of Political Economy.
Frank P. Stafford,
F. Stafford,
G. Johnson,
1973
.