Chochikyan, T. V., Samvelyan, M. A., Haroutyunyan, V. S., & Avetisyan, A. A. (2010). SYNTHESIS OF NEW SPIROHETERYL-SUBSTITUTED BUTANOLIDES . Proceedings of the YSU B: Chemical and Biological Sciences, 44(2 (222), 28–32. https://doi.org/10.46991/PYSU:B/2010.44.2.028