Media type: E-Article Title: A note on four-dimensional (anti-)self-dual quasi-Einstein manifolds Contributor: Catino, Giovanni imprint: Elsevier BV, 2012 Published in: Differential Geometry and its Applications Language: English DOI: 10.1016/j.difgeo.2012.09.005 ISSN: 0926-2245 Keywords: Computational Theory and Mathematics ; Geometry and Topology ; Analysis Origination: Footnote: Access State: Open Access