THE SYNTHESIS OF SOME N-CONTAIN DERIVATIVES OF HETEROCYCLES ON THE BASE OF KETOESTHERS. Proceedings of the YSU B: Chemical and Biological Sciences, [S. l.], v. 36, n. 1 (197), p. 67–72, 2002. DOI: 10.46991/PYSUB.2002.36.1.067. Disponível em: https://journals.ysu.am/index.php/proceedings-chem-biol/article/view/vol36_no1_2002_pp067-072. Acesso em: 21 jan. 2026.