G. Fregien
发表
H.-C. Skudelny,
Gert Fregien,
H. G. Langer,
1988,
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference.
J. V. van Wyk,
G. Fregien,
1989,
20th Annual IEEE Power Electronics Specialists Conference.
Gert Fregien,
Jacobus Daniel van Wyk,
J. D. Wyk,
1992
.