参考文献

Stoughton Journal of the American Chemical Society, 1941 , vol. 63, p. 2376,2378 Full Text Show Details Aspelund Acta Academiae Aboensis, Series B: Mathematica et Physica, 1939 , vol. 11, # 14 p. 3,7 Chem. Zentralbl., 1939 , vol. 110, # II p. 3092