@article{JGAA_2000_4_1_a0,
     author = {Magn\'us Halld\'orsson},
     title = {Approximations of {Weighted} {Independent} {Set} and {Hereditary} {Subset} {Problems}},
     journal = {Journal of Graph Algorithms and Applications},
     pages = {1--16},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {2000},
     doi = {10.7155/jgaa.00020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.7155/jgaa.00020/}
}