Richard E. Ripple
发表
Richard E. Ripple,
Verne N. Rockcastle,
1964
.
Donald J. Treffinger,
Richard E. Ripple,
J. Kent Davis,
1977
.
Richard E. Ripple,
R. Ripple,
1963
.
Richard E. Ripple,
Verne N. Rockcastle,
R. Ripple,
1964
.