Ehsan Chiniforooshan, Vasek Chvátal. A de Bruijn - Erdős theorem and metric spaces. Discrete Mathematics & Theoretical Computer Science, 13(1):67-74, 2011. [doi]
@article{ChiniforooshanC11,
title = {A de Bruijn - Erdős theorem and metric spaces},
author = {Ehsan Chiniforooshan and Vasek Chvátal},
year = {2011},
url = {http://www.dmtcs.org/dmtcs-ojs/index.php/dmtcs/article/view/1318},
researchr = {https://researchr.org/publication/ChiniforooshanC11},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics & Theoretical Computer Science},
volume = {13},
number = {1},
pages = {67-74},
}