Michele Conforti Anna Galluccio Guido Proietti Edge-Connectivity Augmentation and Network Matrices. 355-364 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3353&spage=355 2004 conf/wg/2004 WG db/conf/wg/wg2004.html#ConfortiGP04