Kolb, Hartmuth C.; Andersson, Pher G.; Sharpless, K. Barry
Journal of the American Chemical Society, 1994 , vol. 116, # 4 p. 1278 - 1291

Turchin, K. F.; Yanina, A. D.; Filipenko, T. Ya.; Mikhlina, E. E.; Sheinker, Yu. N.; Yakhtonov, L. N.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 9 p. 1039 - 1048
Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 9 p. 1248 - 1256