CJCU
The Synthesis of O-Ethyl-O- (Substituted y-Butyrolactonylenyl-methyl) N-Alkyl (or N,N-Dialkyl) Phosphoramidothioatcs
Chen Ruyu, Zeng Qiang, Duan Jianrong
Chem. J. Chinese Universities . 1990, (5): 534 -536 .