1.
Naidenova M, Milev N, Kostadinov G. A classification of the uniform coverings. Ann. Sofia Univ. Fac. Math. and Inf. [Internet]. 2009 Dec. 12 [cited 2024 Dec. 4];99:121-7. Available from: https://ftl5.uni-sofia.bg/index.php/fmi/article/view/116