@inbook{401097,
title = {1.2 Spir\'aly},
booktitle = {Historick\'y v\'yvoj pojmu k\v rivka},
series = {GDML\_Books},
publisher = {Nadace Universitas v Brn\v e},
address = {Brno},
year = {2007},
pages = {23-28},
url = {http://dml.mathdoc.fr/item/401097}
}
(éd.). 1.2 Spirály, dans Historický vývoj pojmu křivka, GDML_Books, (2007), pp. 23-28. http://gdmltest.u-ga.fr/item/401097/