@article{bwmeta1.element.bwnjournal-article-apmv1i2p360bwm,
author = {Hampel, R.},
title = {The length of the shortest period of rests of numbers $n^n$
},
journal = {Annales Polonici Mathematici},
volume = {1},
year = {1955},
pages = {360-366},
zbl = {0065.02804},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv1i2p360bwm}
}
Hampel, R. The length of the shortest period of rests of numbers $n^n$
. Annales Polonici Mathematici, Tome 1 (1955) pp. 360-366. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv1i2p360bwm/