YAKOVENKO, G. G.; VOVK, M. V. Convenient approaches to the synthesis of 6-amino- and 6-oxoimidazo[4,5-b]pyrazolo[3,4-e]pyridines. Journal of Organic and Pharmaceutical Chemistry, [S. l.], v. 19, n. 1(73), p. 10–15, 2021. DOI: 10.24959/ophcj.21.224583. Disponível em: https://ophcj.nuph.edu.ua/article/view/224583. Acesso em: 5 may. 2024.