@article{05006925,
title = {Sets of points determining only acute angles and some related colouring problems.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {13},
year = {2006},
zbl = {1081.05103},
language = {en},
url = {http://dml.mathdoc.fr/item/05006925}
}
Bevan, David. Sets of points determining only acute angles and some related colouring problems.. The Electronic Journal of Combinatorics [electronic only], Tome 13 (2006) . http://gdmltest.u-ga.fr/item/05006925/