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Mikitenko, E. K. Romanov, N. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 1 p. 40 - 42 Khimiya Geterotsiklicheskikh Soedinenii, 1981 , # 1 p. 51 - 53
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Arndt Eistert Chemische Berichte, 1927 , vol. 60, p. 2601 Full Text Show Details Arndt Milde Tschenscher Chemische Berichte, 1922 , vol. 55, p. 349 Full Text Show Details Rosenthaler Archiv der Pharmazie (Weinheim, Germany), 1927 , p. 113