Cvetković, A.S.; Milovanović, G.V.; Stanić, M.P.
(Український математичний журнал, 2015)
Positive solutions of a class of matrix equations were studied by Bhatia, et al., Bull. London Math. Soc., 32, 214 (2000), SIAM J. Matrix Anal. Appl., 14, 132 (1993) and 27, 103–114 (2005), by Kwong, Linear Algebra Appl., ...