Bostjan Bresar, Sandi Klavzar, Douglas F. Rall. On the packing chromatic number of Cartesian products, hexagonal lattice, and trees. Electronic Notes in Discrete Mathematics, 29:237-241, 2007. [doi]
@article{BresarKR07:1,
title = {On the packing chromatic number of Cartesian products, hexagonal lattice, and trees},
author = {Bostjan Bresar and Sandi Klavzar and Douglas F. Rall},
year = {2007},
doi = {10.1016/j.endm.2007.07.040},
url = {http://dx.doi.org/10.1016/j.endm.2007.07.040},
researchr = {https://researchr.org/publication/BresarKR07%3A1},
cites = {0},
citedby = {0},
journal = {Electronic Notes in Discrete Mathematics},
volume = {29},
pages = {237-241},
}