@article{05014509, title = {Permutations of the natural numbers with prescribed difference multisets.}, journal = {Integers}, volume = {6}, year = {2006}, zbl = {1134.11316}, language = {en}, url = {http://dml.mathdoc.fr/item/05014509} }
Hegarty, Peter; Larsson, Urban. Permutations of the natural numbers with prescribed difference multisets.. Integers, Tome 6 (2006) . http://gdmltest.u-ga.fr/item/05014509/