Giuseppe Patanè Michela Spagnuolo Triangle Mesh Duality: Reconstruction and Smoothing. 111-128 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2768&spage=111 2003 conf/ima-ms/2003 IMA Conference on the Mathematics of Surfaces db/conf/ima-ms/ima-ms2003.html#PataneS03