@article{bwmeta1.element.bwnjournal-article-doi-10_4064-aa139-3-2,
author = {Jan Florek},
title = {Billiards and the five distance theorem},
journal = {Acta Arithmetica},
volume = {139},
year = {2009},
pages = {229-239},
zbl = {1241.11079},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa139-3-2}
}
Jan Florek. Billiards and the five distance theorem. Acta Arithmetica, Tome 139 (2009) pp. 229-239. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa139-3-2/