@article{104923,
author = {Josef Kr\'al},
title = {On cyclic and radial variations of a plane path (Preliminary communication)},
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {004},
year = {1963},
pages = {3-9},
zbl = {0147.09804},
mrnumber = {0159930},
language = {en},
url = {http://dml.mathdoc.fr/item/104923}
}
Král, Josef. On cyclic and radial variations of a plane path (Preliminary communication). Commentationes Mathematicae Universitatis Carolinae, Tome 004 (1963) pp. 3-9. http://gdmltest.u-ga.fr/item/104923/