共 4 条
[1]
Haller W. D., 1971, [No title captured], Patent No. [US3573980, 3573980]
[2]
HOKKYO J, 1965, JAN IECE TECH GROUP
[3]
IWASAKI S, 1963, SCI REP RITU B, V15, P85
[4]
VANDERGIESSEN AA, 1969, IEEE T MAGN, VMAG5, P317