@inbook{403669,
title = {2. kapitola. Dokonal\'e a spriatelen\'e \v c\'\i sla},
booktitle = {Dokonal\'e a spriatelen\'e \v c\'\i sla},
series = {GDML\_Books},
publisher = {Mlad\'a fronta},
address = {Praha},
year = {1969},
pages = {18-32},
language = {sk},
url = {http://dml.mathdoc.fr/item/403669}
}
(éd.). 2. kapitola. Dokonalé a spriatelené čísla, dans Dokonalé a spriatelené čísla, GDML_Books, (1969), pp. 18-32. http://gdmltest.u-ga.fr/item/403669/