YESHKEYEV, A. R.; TUNGUSHBAYEVA, I. O.; AMANBEKOV, S. M. Existentially prime Jonsson quasivarieties and their Jonsson spectra. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 108, n. 4, p. 117–124, 2022. DOI: 10.31489/2022m4/117-124. Disponível em: https://mts.buketov.edu.kz/mathematics-vestnik/article/view/544. Acesso em: 8 dec. 2025.