@article{DMGT_2013_33_4_a4,
     author = {Faudree, Ralph J. and Gould, Ronald J. and Jacobson, Michael S.},
     title = {Weak {Saturation} {Numbers} for {Sparse} {Graphs}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {677--693},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2013_33_4_a4/}
}