@article{05274225, title = {On Hultman numbers.}, journal = {Journal of Integer Sequences [electronic only]}, volume = {10}, year = {2007}, zbl = {1138.05301}, language = {en}, url = {http://dml.mathdoc.fr/item/05274225} }
Doignon, Jean-Paul; Labarre, Anthony. On Hultman numbers.. Journal of Integer Sequences [electronic only], Tome 10 (2007) . http://gdmltest.u-ga.fr/item/05274225/