@article{DMGT_2011_31_2_a14,
     author = {Sewell, J. and Slater, Peter},
     title = {Distance independence in graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {397--409},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2011_31_2_a14/}
}