共 18 条
[3]
Denkewalter R. G., 1981, U.S. Patent, Patent No. [4,289,872, 4289872]
[4]
FRECHET JMJ, 1989, IUPAC INT S FUNCT PO, P19
[5]
HALL HK, 1987, POLYM BULL, V17, P409