@article{1103044385, author = {Scherk, Peter}, title = {An inequality for sets of integers.}, journal = {Pacific J. Math.}, volume = {5}, number = {4}, year = {1955}, pages = { 585-587}, language = {en}, url = {http://dml.mathdoc.fr/item/1103044385} }
Scherk, Peter. An inequality for sets of integers.. Pacific J. Math., Tome 5 (1955) no. 4, pp. 585-587. http://gdmltest.u-ga.fr/item/1103044385/