@article{GDZPPN002276690,
title = {The representation of integers as sums of pyramidal numbers .},
journal = {Mathematische Annalen},
volume = {109},
year = {1934},
pages = {196-199},
zbl = {0008.14704},
url = {http://dml.mathdoc.fr/item/GDZPPN002276690}
}
James, R.D. The representation of integers as sums of pyramidal numbers .. Mathematische Annalen, Tome 109 (1934) pp. 196-199. http://gdmltest.u-ga.fr/item/GDZPPN002276690/