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Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 4 p. 420 - 422
Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 4 p. 505 - 507

Ardaschew
Zhurnal Obshchei Khimii, 1949 , vol. 19, p. 1656,1660; engl. Ausg. S. a85, a89

Koslow
Zhurnal Obshchei Khimii, 1937 , vol. 7, p. 1860,1864
Chem. Zentralbl., 1939 , vol. 110, # I p. 620
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Koslow; Olifson
Zhurnal Obshchei Khimii, 1937 , vol. 7, p. 2301,2304
Chem. Zentralbl., 1939 , vol. 110, # I p. 621

Buu-Hoi; Guettier
Recueil des Travaux Chimiques des Pays-Bas, 1946 , vol. 65, p. 502,507

Yamaguchi
Yakugaku Zasshi, 1924 , # 503 p. 6
Chem. Zentralbl., 1927 , vol. 98, # I p. 1837

Koslow
Zhurnal Obshchei Khimii, 1937 , vol. 7, p. 1860,1864
Chem. Zentralbl., 1939 , vol. 110, # I p. 620
Full Text Show Details
Koslow; Olifson
Zhurnal Obshchei Khimii, 1937 , vol. 7, p. 2301,2304
Chem. Zentralbl., 1939 , vol. 110, # I p. 621