Maximum Matchings in Planar Graphs via Gaussian Elimination.

Marcin Mucha Piotr Sankowski Maximum Matchings in Planar Graphs via Gaussian Elimination. 532-543 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3221&spage=532 2004 conf/esa/2004 ESA db/conf/esa/esa2004.html#MuchaS04