1.
Skrundz VV, Safonova IN. On Shemetkov’s problem of describing critical formations in the class of τ-closed σ-local formations. Журнал Белорусского государственного университета. Математика. Информатика [Internet]. 2026 Jun. 1 [cited 2026 Jul. 19];(1):163-78. Available from: https://journals.bsu.by/index.php/mathematics/article/view/7535