@article{bwmeta1.element.bwnjournal-article-aav9i2p161bwm, author = {Rankin, R.}, title = {Difference sets}, journal = {Acta Arithmetica}, volume = {10}, year = {1964}, pages = {161-168}, zbl = {0131.01304}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav9i2p161bwm} }
Rankin, R. Difference sets. Acta Arithmetica, Tome 10 (1964) pp. 161-168. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav9i2p161bwm/