@article{bwmeta1.element.bwnjournal-article-aav12i3p223bwm,
author = {Luthar, Indar},
title = {A generalization of a theorem of Landau},
journal = {Acta Arithmetica},
volume = {12},
year = {1967},
pages = {223-228},
zbl = {0163.04203},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav12i3p223bwm}
}
Luthar, Indar. A generalization of a theorem of Landau. Acta Arithmetica, Tome 12 (1967) pp. 223-228. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav12i3p223bwm/