Levykin, V., Ievlanov, M., Neumyvakina, O. and Рetrychenko O. 2021. Development of model of a web-based information system control problem. Technology audit and production reserves. 1, 2(57) (Feb. 2021), 25–31. DOI:https://doi.org/10.15587/2706-5448.2021.225067.