Nikolova, Lyudmila. “Interpolation of Some Properties of Operators Acting in Families of Banach Spaces”. Ann. Sofia Univ. Fac. Math. and Inf. 84 (December 12, 1993): 3–16. Accessed November 24, 2024. https://ftl5.uni-sofia.bg./index.php/fmi/article/view/463.