@article{02000851, title = {On Obl\'ath's problem.}, journal = {Journal of Integer Sequences [electronic only]}, volume = {6}, year = {2003}, zbl = {1040.11003}, language = {en}, url = {http://dml.mathdoc.fr/item/02000851} }
Gica, Alexandru; Panaitopol, Laurenţiu. On Obláth's problem.. Journal of Integer Sequences [electronic only], Tome 6 (2003) . http://gdmltest.u-ga.fr/item/02000851/