By Preissmann Emmanuel   in Monatshefte für Mathematik

ISSN:0026-9255|150|3|233-239

Springer Publishing Company ‎(2007)‎

Access to resources Favorite 21.956577

By Preissmann Emmanuel   Mischler Maurice   in American Mathematical Monthly

ISSN:1930-0972|116|3|268-272

Mathematical Association of America‎(2009)‎

Access to resources Favorite 17.565262