Sengupta, A. K.; Gupta, M. M.; Gupta, Anurag Ateet
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1982 , vol. 21, # 6 p. 600 - 602
Reverdin; Dresel
Bulletin de la Societe Chimique de France, 1904 , vol. <3>31, p. 1269
Chemische Berichte, 1904 , vol. 37, p. 4453
Chem. Zentralbl., 1905 , vol. 76, # I p. 80