@article{GDZPPN002025442, title = {Sequences with Adjacent Elements Unequal}, journal = {Aequationes mathematicae}, volume = {7}, year = {1971}, pages = {256-262}, zbl = {0222.05006}, url = {http://dml.mathdoc.fr/item/GDZPPN002025442} }
EIFLER, L.; REID, K.B. JR.; ROSELLE, D. Sequences with Adjacent Elements Unequal. Aequationes mathematicae, Tome 7 (1971) pp. 256-262. http://gdmltest.u-ga.fr/item/GDZPPN002025442/