1.
Bujukliev N. Linear cross-sections and Fredholm operators in a class groupoid $C^*$-algebras. Ann. Sofia Univ. Fac. Math. and Inf. [Internet]. 2021 Dec. 12 [cited 2024 Nov. 24];108:17-21. Available from: https://ftl5.uni-sofia.bg./index.php/fmi/article/view/550