1. Bhatia, R.: Positive Definite Matrices, Princeton Series and Applied Mathematics. Princeton University Press, Princeton (2007)
2. Bhatia, R., Davis, C.: More operator versions of the Schwarz inequality. Commun. Math. Phys. 215, 239–244 (2000)
3. Drury, S.W., Liu, S., Lu, C.Y., Puntanen, S., Styan, G.: Some comments on several matrix inequalities with applications to canonical correlations: historical backgroud and recent developments. Indian J. Stat. 64, 453–507 (2002)
4. Fan, Ky: Some matrix inequalities. Abh. Math. Sem. Univ. Hamburg 29, 185–196 (1966)
5. Fujii, M., Mićić Hot, J., Pečarić, J., Seo, Y.: Recent developments of Mond-Pečarić method in operator inequalities, monographs in inequalities vol 4, Element, Zagreb (2012)