@article{1077377970,
author = {Keller, Gordon and Olson, F. R.},
title = {Counting polynomial functions $(\mod p^n)$},
journal = {Duke Math. J.},
volume = {35},
number = {1},
year = {1968},
pages = { 835-838},
language = {en},
url = {http://dml.mathdoc.fr/item/1077377970}
}
Keller, Gordon; Olson, F. R. Counting polynomial functions $(\mod p^n)$. Duke Math. J., Tome 35 (1968) no. 1, pp. 835-838. http://gdmltest.u-ga.fr/item/1077377970/