NEMATOVA M.SH. BIOLOGICALLY ACTIVE SUBSTANCES, THEIR CLASSIFICATION AND CHEMICAL STRUCTURE. International Multidisciplinary Journal for Research & Development, [S. l.], v. 13, n. 4, p. 1347–1350, 2026. Disponível em: https://www.ijmrd.in/index.php/imjrd/article/view/5828. Acesso em: 28 apr. 2026.