参考文献

Richter Helvetica Chimica Acta, 1949 , vol. 32, p. 2318,2320 Full Text Show Details Ruggli; Maeder Helvetica Chimica Acta, 1943 , vol. 26, p. 1476,1487 Helvetica Chimica Acta, 1944 , vol. 27, p. 436,439