@article{1093890809,
author = {Roberts, Fred S.},
title = {Tolerance geometry.},
journal = {Notre Dame J. Formal Logic},
volume = {14},
number = {1},
year = {1973},
pages = { 68-76},
language = {en},
url = {http://dml.mathdoc.fr/item/1093890809}
}
Roberts, Fred S. Tolerance geometry.. Notre Dame J. Formal Logic, Tome 14 (1973) no. 1, pp. 68-76. http://gdmltest.u-ga.fr/item/1093890809/