Tommila Annales Academiae Scientiarum Fennicae, Series A, 1936 , vol. 46, # 6 p. 83 Chem. Zentralbl., 1937 , vol. 108, # II p. 204 Full Text Show Details Biquard Annales de Chimie (Cachan, France), 1933 , vol. <10> 20, p. 97,113