Pistschimuka
Zhurnal Russkago Fiziko-Khimicheskago Obshchestva, 1912 , vol. 44, p. 1439,1442
Journal fuer Praktische Chemie (Leipzig), 1911 , vol. <2>84, p. 748
Chem. Zentralbl., 1913 , vol. 84, # I p. 1581