@article{105049,
author = {Pavel Goral\v c\'\i k},
title = {An example concerning small changes of commuting functions},
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {007},
year = {1966},
pages = {123-126},
zbl = {0142.02302},
mrnumber = {0197625},
language = {en},
url = {http://dml.mathdoc.fr/item/105049}
}
Goralčík, Pavel. An example concerning small changes of commuting functions. Commentationes Mathematicae Universitatis Carolinae, Tome 007 (1966) pp. 123-126. http://gdmltest.u-ga.fr/item/105049/