@inbook{404006,
title = {Kapitola 4. Mno\v ziny bod\r u v p\v r\'\i mce; intervaly},
booktitle = {O nerovnostech a nerovnic\'\i ch},
series = {GDML\_Books},
publisher = {Mlad\'a fronta},
address = {Praha},
year = {1982},
pages = {23-26},
url = {http://dml.mathdoc.fr/item/404006}
}
(éd.). Kapitola 4. Množiny bodů v přímce; intervaly, dans O nerovnostech a nerovnicích, GDML_Books, (1982), pp. 23-26. http://gdmltest.u-ga.fr/item/404006/