参考文献

Hoffmann-La Roche Patent: US2661368 , 1952 ; Full Text Show Details Hoffmann-La Roche Patent: DE1021354 , 1953 ; Full Text Show Details Samochwalow et al. Zhurnal Obshchei Khimii, 1957 , vol. 27, p. 2501,2505; engl. Ausg. S. 2560, 2563