@article{bwmeta1.element.bwnjournal-article-pmfv33i1p8bwm,
author = {Romuald Witwi\'nski},
title = {La g\'eom\'etrie de direction},
journal = {Prace Matematyczno-Fizyczne},
volume = {33},
year = {1923},
pages = {99-114},
zbl = {52.0630.01},
language = {fra},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-pmfv33i1p8bwm}
}
Witwiński, Romuald. La géométrie de direction. Prace Matematyczno-Fizyczne, Tome 33 (1923) pp. 99-114. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-pmfv33i1p8bwm/