Stankyavichyus, A. P.; Terent'ev, P. B.; Bolotin, V. A.; Lashin, V. V.; Rakhimi, I. M.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1988 , p. 403 - 409
Khimiya Geterotsiklicheskikh Soedinenii, 1988 , vol. 24, # 4 p. 491 - 498

Zincke
Justus Liebigs Annalen der Chemie, 1909 , vol. 370, p. 302
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Kehrmann; Messinger
Chemische Berichte, 1892 , vol. 25, p. 899
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Willgerodt
Journal fuer Praktische Chemie (Leipzig), 1892 , vol. <2> 46, p. 130
Journal fuer Praktische Chemie (Leipzig), 1897 , vol. <2> 55, p. 390

Zincke
Justus Liebigs Annalen der Chemie, 1909 , vol. 370, p. 302
Full Text Show Details
Kehrmann; Messinger
Chemische Berichte, 1892 , vol. 25, p. 899
Full Text Show Details
Willgerodt
Journal fuer Praktische Chemie (Leipzig), 1892 , vol. <2> 46, p. 130
Journal fuer Praktische Chemie (Leipzig), 1897 , vol. <2> 55, p. 390