@article{bwmeta1.element.bwnjournal-article-aav15i3p273bwm,
author = {\v Sal\'at, T.},
title = {On ratio sets of natural numbers},
journal = {Acta Arithmetica},
volume = {16},
year = {1969},
pages = {273-278},
zbl = {0177.07001},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav15i3p273bwm}
}
Šalát, T. On ratio sets of natural numbers. Acta Arithmetica, Tome 16 (1969) pp. 273-278. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav15i3p273bwm/