@article{1183420544,
author = {Onnen, H.},
title = {Gergonne's pile problem},
journal = {Bull. Amer. Math. Soc.},
volume = {16},
number = {3},
year = {1909},
pages = { 121-130},
language = {en},
url = {http://dml.mathdoc.fr/item/1183420544}
}
Onnen, H. Gergonne's pile problem. Bull. Amer. Math. Soc., Tome 16 (1909) no. 3, pp. 121-130. http://gdmltest.u-ga.fr/item/1183420544/