1. Colombo, F., Gantner, J., Janssen, T.: Schatten class and Berezin transform of quaternionic linear operators. Math. Methods Appl. Sci. 39, 5582–5606 (2016)
2. Colombo, F., Sabadini, I., Struppa, D.C.: Noncommutative functional calculus. Theory and applications of slice hyperholomorphic functions, volume 289 of Progress in Mathematics. Birkhäuser/Springer Basel AG, Basel (2011)
3. Fashandi, M.: Some properties of bounded linear operators on quaternionic Hilbert spaces. Kochi J. Math. 9, 127–135 (2014)
4. Furuta, T., Mic̀ic̀ Hot, J., Pečaric̀, J., Seo., Y.: Mond-Pečaric̀ Method in Operator Inequalities (Element, Zagreb, 2005)
5. Ghiloni, R., Moretti, V., Perotti, A.: Continuous slice functional calculus in quaternionic Hilbert spaces. Rev. Math. Phys. 25, 1350006 (2013)