Vlasova, O. D., S. V. Vlasov, V. I. Kabachnyy, and V. S. Vlasov. 2020. “The Synthesis, Transformations and Biological Activity of thieno[2,3-d]pyrimidine Derivatives With the Carboxylic Groups As the Substituents in the Pyrimidine Ring”. Journal of Organic and Pharmaceutical Chemistry 18 (4(72):4-13. https://doi.org/10.24959/ophcj.20.209835.