Nagornyi, K.A., Martinkus, I.O. and Tkachuk, M.V. 2019. The impact of usage of post object-oriented technologies on defect reduction in software maintenance. Bulletin of V.N. Karazin Kharkiv National University, series «Mathematical modeling. Information technology. Automated control systems». 41, (Apr. 2019), 55-64. DOI:https://doi.org/10.26565/2304-6201-2019-41-06.