%0 Journal Article %A Tu, Jianhua %A Shi, Yongtang %T An Efficient Polynomial Time Approximation Scheme for the Vertex Cover P3 Problem on Planar Graphs %J Discussiones Mathematicae. Graph Theory %D 2019 %P 55-65 %V 39 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2019_39_1_a5/ %G en %F DMGT_2019_39_1_a5