@article{GDZPPN000363839,
title = {Note on Induced Subgraphs of the Unit Distance Graph En.},
journal = {Discrete \& computational geometry},
volume = {4},
year = {1989},
pages = {15-18},
zbl = {0652.05019},
url = {http://dml.mathdoc.fr/item/GDZPPN000363839}
}
Maehara, H. Note on Induced Subgraphs of the Unit Distance Graph En.. Discrete & computational geometry, Tome 4 (1989) pp. 15-18. http://gdmltest.u-ga.fr/item/GDZPPN000363839/