@article{DMGT_1999_19_1_a2,
     author = {W{\l}och, Andrzej},
     title = {Distance perfectness of graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {31--43},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_1999_19_1_a2/}
}