By Schmüdgen Konrad   in Mathematische Zeitschrift

ISSN:0025-5874|254|3|641-653

Springer Publishing Company ‎(2006)‎

Access to resources Favorite 24.799856

By Schmüdgen Konrad   Wagner Elmar   in Letters in Mathematical Physics

ISSN:0377-9017|64|3|245-254

Springer Publishing Company ‎(2003)‎

Access to resources Favorite 21.023512