@article{05014464, title = {A question of Sierpinski on triangular numbers.}, journal = {Integers}, volume = {5}, year = {2005}, zbl = {1130.11013}, language = {en}, url = {http://dml.mathdoc.fr/item/05014464} }
Bennett, Michael A. A question of Sierpinski on triangular numbers.. Integers, Tome 5 (2005) . http://gdmltest.u-ga.fr/item/05014464/