Ésik, Zoltán (2008). “Iteration semirings”. Trong Ito, Masami (biên tập). Developments in language theory. 12th international conference, DLT 2008, Kyoto, Japan, September 16–19, 2008. Proceedings. Lecture Notes in Computer Science. 5257. Berlin: Springer-Verlag. tr. 1–20. doi:10.1007/978-3-540-85780-8_1. ISBN978-3-540-85779-2. Zbl1161.68598.
Guterman, Alexander E. (2008). “Rank and determinant functions for matrices over semirings”. Trong Young, Nicholas; Choi, Yemon (biên tập). Surveys in Contemporary Mathematics. London Mathematical Society Lecture Note Series. 347. Cambridge University Press. tr. 1–33. ISBN978-0-521-70564-6. ISSN0076-0552. Zbl1181.16042.
zbmath.org
Ésik, Zoltán (2008). “Iteration semirings”. Trong Ito, Masami (biên tập). Developments in language theory. 12th international conference, DLT 2008, Kyoto, Japan, September 16–19, 2008. Proceedings. Lecture Notes in Computer Science. 5257. Berlin: Springer-Verlag. tr. 1–20. doi:10.1007/978-3-540-85780-8_1. ISBN978-3-540-85779-2. Zbl1161.68598.
Guterman, Alexander E. (2008). “Rank and determinant functions for matrices over semirings”. Trong Young, Nicholas; Choi, Yemon (biên tập). Surveys in Contemporary Mathematics. London Mathematical Society Lecture Note Series. 347. Cambridge University Press. tr. 1–33. ISBN978-0-521-70564-6. ISSN0076-0552. Zbl1181.16042.