共 18 条
[3]
BROSSAS J, 1967, Patent No. 1469121
[8]
KETLEY AD, 1968, Patent No. 3367902
[9]
LISHANSKII IS, 1965, VYSOKOMOL SOEDIN, P7966
[10]
NAEGELE W, 1965, TETRAHEDRON LETT, P4283