@article{DMGT_2015_35_1_a13,
     author = {Caro, Yair and Lauri, Josef and Zarb, Christina},
     title = {Constrained {Colouring} and {\ensuremath{\sigma}-Hypergraphs}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {171--189},
     year = {2015},
     volume = {35},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2015_35_1_a13/}
}