Avetisyan, A.A. et al. 2005. A NEW METHOD OF SYNTHESIS 2-FUNCTIONAL SUBSTITUTED 2-BUTENE-4-OLIDES. Proceedings of the YSU B: Chemical and Biological Sciences. 39, 1 (206) (Feb. 2005), 84–87. DOI:https://doi.org/10.46991/PYSU:B/2005.39.1.084.