Media type: E-Article Title: Homomorphism preservation on quasi-wide classes Contributor: Dawar, Anuj imprint: Elsevier BV, 2010 Published in: Journal of Computer and System Sciences Language: English DOI: 10.1016/j.jcss.2009.10.005 ISSN: 0022-0000 Origination: Footnote: Access State: Open Access