Media type: E-Article Title: On congruence-semisimple semirings and the K0-group characterization of ultramatricial algebras over semifields Contributor: Katsov, Yefim; Nam, Tran Giang; Zumbrägel, Jens imprint: Elsevier BV, 2018 Published in: Journal of Algebra Language: English DOI: 10.1016/j.jalgebra.2018.04.024 ISSN: 0021-8693 Origination: Footnote: Access State: Open Access