@article{DMGT_2019_39_1_a5,
     author = {Tu, Jianhua and Shi, Yongtang},
     title = {An {Efficient} {Polynomial} {Time} {Approximation} {Scheme} for the {Vertex} {Cover} {P\protect\textsubscript{3}} {Problem} on {Planar} {Graphs}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {55--65},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2019_39_1_a5/}
}