Prokip, V. M. “On the Solvability of a System of Linear Equations Over the Domain Of Principal Ideals”. Ukrains’kyi Matematychnyi Zhurnal 66, no. 4 (April 25, 2014): 566–570. Accessed March 29, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2159.