@article{GDZPPN000365106,
title = {Convex Independent Sets and 7-Holes in Restricted Planar Point Sets.},
journal = {Discrete \& computational geometry},
volume = {7},
year = {1992},
pages = {135-152},
zbl = {0748.52005},
url = {http://dml.mathdoc.fr/item/GDZPPN000365106}
}
Valtr, P. Convex Independent Sets and 7-Holes in Restricted Planar Point Sets.. Discrete & computational geometry, Tome 7 (1992) pp. 135-152. http://gdmltest.u-ga.fr/item/GDZPPN000365106/