KUZMA, Bojan, 2011, Fernandes, Rosário; da Cruz, Henrique F.: Pairs of matrices that preserve the value of a generalized matrix function on the set of the upper triangular matrices. (English). - [J] Linear Algebra Appl. 433, No. 7, 1336-1347 (2010). ISSN 0024-3795. [online]. 2011. [Accessed 5 April 2025]. Retrieved from: http://www.zentralblatt-math.org/zmath/en/advanced/?q=an:1203.15016