@article{GDZPPN000365084,
title = {An Upper Bound on the Number of Planar K-Sets.},
journal = {Discrete \& computational geometry},
volume = {7},
year = {1992},
pages = {109-124},
zbl = {0765.68211},
url = {http://dml.mathdoc.fr/item/GDZPPN000365084}
}
Pach, J.; Szemeredi, E.; Steiger, W. An Upper Bound on the Number of Planar K-Sets.. Discrete & computational geometry, Tome 7 (1992) pp. 109-124. http://gdmltest.u-ga.fr/item/GDZPPN000365084/