共 20 条
[2]
CROFT TS, TO BE UBLISHED
[3]
Diesslin A.R., 1951, U.S. Pat., Patent No. 2567011
[4]
FEDOROVA GB, 1969, ZH OBSHCH KHIM, V39, P2710
[6]
FRITZ CG, 1967, Patent No. 3347901
[7]
FRITZ CG, 1966, Patent No. 3317484
[8]
GRINDAHL GA, 1972, Patent No. 3652464
[9]
GUENTHNER RA, 1969, Patent No. 3471484