[1] D. Z. Docovic, B. H. Smith, Quaternionic matrices: Unitary similarity, simultaneous triangularization and some trace identities, Linear Algebra Appl., 428(4)(2008), 890-910.
[2] P. K. Draxl, Skew fields, Cambridge University Press, 1983.
[3] R. M. Guralnick, Triangularization of sets of matrices, Linear Multilinear Algebra, 9(2)(1980), 133-140.
[4] I. Kaplansky, The Engel-Kolchin theorem revisited. Contributions to Algebra, (Bass, Cassidy and Kovacik, Eds.), Academic Press, New York, 1977.
[5] T. Y. Lam, A first course in noncommutative rings. 2nd ed. Springer Verlag, New York, 2001.
[6] H. Momenaee Kermani, Triangularizability of algebras over division rings, Bull. Iran. Math. Soc., 34(1)(2008), 73 - 81.
[7] H. Momenaee Kermani, Triangularizability over fields and division rings. Ph. D. thesis, Shahid Bahonar University of Kerman, Kerman, Iran, 2005.
[8] M. Radjabalipour, P. Rosenthal and B. R. Yahaghi, Burnside's theorem for matrix rings over division rings,
Linear Algebra Appl., 382(2004), 29-44.
[9] H. Radjavi, A trace condition equivalent to simultaneous triangularizability, Canada. J. Math., 38(1986), 376 - 386.
[10] H. Radjavi and P. Rosenthal, Simultaneous triangularization, Springer-Verlag, New York, 2000.
[11] W. S. Sizer, Similarity of sets of matrices over a skew field, Ph.D. thesis, Bedford college, University of London, 1975.
[12] B. R. Yahaghi, On F-algebras of algebraic matrices over a subfield F of the center of a division ring, Linear Algebra Appl., 418(2-3)(2006), 599-613.
[13] B. R. Yahaghi, Reducibility results on operator semigroups. Ph.D. thesis, Dalhousie University, Halifax, N.S., Canada, 2002.