Daulet, G. et al. 2021. Biological activity of 4-ethynyl-, 4-oxy-, 4-butoxypropylpyperidine and azaheterocyclic compounds. International Journal of Biology and Chemistry. 14, 1 (Jul. 2021), 130–138. DOI:https://doi.org/10.26577/ijbch.2021.v14.i1.014.