@book{Ebbinghaus_Ewing_1995, address={New York}, edition={Corr. 3rd print}, title={Numbers}, volume={Graduate texts in mathematics}, publisher={Springer}, author={Ebbinghaus, Heinz-Dieter and Ewing, John H.}, year={1995} }
@book{Farenick_2001, address={New York}, title={Algebras of linear transformations}, volume={Universitext}, publisher={Springer}, author={Farenick, Douglas R.}, year={2001} }