MaslyuchenkoV. K., MikhailyukV. V., and SobchukО. V. 1992. “Inverse Problems of the Theory of Separate-Continuous Images ”. Ukrains’kyi Matematychnyi Zhurnal 44 (9), 1209-20. https://umj.imath.kiev.ua/index.php/umj/article/view/8171.