Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1963__18_140765, author = {Peter Scherk}, title = {\"Uber {Summen} von {Mengen} nat\"urlicher {Zahlen.}}, journal = {Elemente der Mathematik}, pages = {49--54}, publisher = {mathdoc}, volume = {18}, year = {1963}, zbl = {0112.27403}, url = {http://geodesic.mathdoc.fr/item/ELMA_1963__18_140765/} }
Peter Scherk. Über Summen von Mengen natürlicher Zahlen.. Elemente der Mathematik, Tome 18 (1963), pp. 49-54. http://geodesic.mathdoc.fr/item/ELMA_1963__18_140765/