@article{CMJ_2001__51_1_a15,
     author = {Hartnell, Bert L. and Rall, Douglas F.},
     title = {Connected domatic number in planar graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {173--179},
     publisher = {mathdoc},
     volume = {51},
     number = {1},
     year = {2001},
     mrnumber = {1814642},
     zbl = {1079.05512},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2001__51_1_a15/}
}