Robert E. L. Aldred Ken-ichi Kawarabayashi Michael D. Plummer On the matching extendability of graphs in surfaces. 105-115 2008 98 J. Comb. Theory, Ser. B 1 http://dx.doi.org/10.1016/j.jctb.2007.06.001 db/journals/jct/jctb98.html#AldredKP08