Iiro S. Honkala. An optimal locating-dominating set in the infinite triangular grid. Discrete Mathematics, 306(21):2670-2681, 2006. [doi]
@article{Honkala06,
title = {An optimal locating-dominating set in the infinite triangular grid},
author = {Iiro S. Honkala},
year = {2006},
doi = {10.1016/j.disc.2006.04.028},
url = {http://dx.doi.org/10.1016/j.disc.2006.04.028},
researchr = {https://researchr.org/publication/Honkala06},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {306},
number = {21},
pages = {2670-2681},
}