共 17 条
[1]
ABE H, 1970 INT C FERR KYOT
[3]
DUINKER S, 1960, PHILIPS RES REP, V15, P342
[4]
HARADA S, 1970 INT C FERR KYOT
[5]
ITOH T, 1971, J AM CERAM SOC, V54, P24
[6]
ITOH T, PRIVATE COMMUNICATIO
[7]
JOKO M, 1966, Patent No. 479350
[8]
KAJIWARA K, PRIVATE COMMUNICATIO
[9]
KAWAMURA N, 1968 MAGN REC COMM I