Lutsak, S.M., A.O. Basheyeva, A.M. Asanbekov, and O.A. Voronina. “Some Non-Standard Quasivarieties of Lattices”. Bulletin of the Karaganda University. Mathematics Series 111, no. 3 (September 30, 2023): 72–80. Accessed September 1, 2025. https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/584.