“A NEW APPROACH TO THE SYNTHESIS OF 2-(-3’-OXOBUTHYL)-4-SUBSTITUTED-4-PENTANOLIDS”. Proceedings of the YSU B: Chemical and Biological Sciences, vol. 36, no. 2 (198), July 2002, pp. 88-91, https://doi.org/10.46991/PYSUB.2002.36.2.088.