@article{1077473106, author = {Pollard, Harry}, title = {Sequences with vanishing even differences}, journal = {Duke Math. J.}, volume = {12}, number = {1}, year = {1945}, pages = { 303-304}, language = {en}, url = {http://dml.mathdoc.fr/item/1077473106} }
Pollard, Harry. Sequences with vanishing even differences. Duke Math. J., Tome 12 (1945) no. 1, pp. 303-304. http://gdmltest.u-ga.fr/item/1077473106/