Media type: E-Article Title: Coexistence of Centers and Limit Cycles in Polynomial Systems Contributor: Kooij, Robert E.; Zegeling, André imprint: Rocky Mountain Mathematics Consortium, 2000 Published in: Rocky Mountain Journal of Mathematics Language: Not determined DOI: 10.1216/rmjm/1022009285 ISSN: 0035-7596 Keywords: General Mathematics Origination: Footnote: Access State: Open Access