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@article{DMGT_2007_27_3_a11, author = {Hatami, Pooya}, title = {An approximation algorithm for the total covering problem}, journal = {Discussiones Mathematicae. Graph Theory}, pages = {553--558}, publisher = {mathdoc}, volume = {27}, number = {3}, year = {2007}, language = {en}, url = {http://geodesic.mathdoc.fr/item/DMGT_2007_27_3_a11/} }
Hatami, Pooya. An approximation algorithm for the total covering problem. Discussiones Mathematicae. Graph Theory, Tome 27 (2007) no. 3, pp. 553-558. http://geodesic.mathdoc.fr/item/DMGT_2007_27_3_a11/