@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/}
}