Mussina, N.M., and O.I. Ulbrikht. “The Representation Theorem of the Robinson Hybrid”. Bulletin of the Karaganda University. Mathematics Series 119, no. 3 (September 30, 2025): 184–199. Accessed October 5, 2025. https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/1108.