@article{DMGT_2004_24_3_a15,
     author = {Zhou, Sanming},
     title = {A {Gallai-type} equality for the total domination number of a graph},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {539--543},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2004_24_3_a15/}
}