@inbook{401435,
title = {8. Permutace},
booktitle = {Z\'aklady teorie grupoid\r u a grup},
series = {GDML\_Books},
publisher = {Nakladatelstv\'\i\ \v ceskoslovensk\'e akademie v\v ed},
address = {Praha},
year = {1962},
pages = {60-68},
url = {http://dml.mathdoc.fr/item/401435}
}
(éd.). 8. Permutace, dans Základy teorie grupoidů a grup, GDML_Books, (1962), pp. 60-68. http://gdmltest.u-ga.fr/item/401435/