1.
Koval RF. Classification of Quadratic Parastrophically Uncancelable Functional Equations for Five Object Variables on Quasigroups. Ukr. Mat. Zhurn. [Internet]. 2005 Aug. 25 [cited 2025 Dec. 5];57(8):1058 – 1068. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3664