R. Greif
发表
G. Yadigaroglu,
D. Abdollahian,
E. Elias,
1977
.
G. Yadigaroglu,
R. Greif,
W. T. Peake,
1977
.
R. Greif,
H. Weinstock,
B. P. Marquis,
1997,
Proceedings of the 1997 IEEE/ASME Joint Railroad Conference.
R. Greif,
1986
.
Robert F. Sawyer,
R. Greif,
Antoni K. Oppenheim,
1975
.
Hyung Gyu Park,
R. Greif,
J.A. Malen,
2006,
Journal of Microelectromechanical Systems.
R. Greif,
R. Greif,
Kurt Engelberg-Forster,
1959
.
R. Greif,
Tom Webster,
W. Place,
1981
.