“INVESTIGATIONS IN THE FIELD OF UNSATURATED LACTONES. SOME CHEMICAL REACTIONS OF 2-ETHOXYCARBONYL-3- BROMINEMETHYL-4,4-DIMETHYL-2-BUTENE-4-OLID”. Proceedings of the YSU B: Chemical and Biological Sciences, vol. 37, no. 1 (200), Mar. 2003, pp. 80-85, https://doi.org/10.46991/PYSUB.2003.37.1.080.