%0 Journal Article %A Thierry Chatelain %T A new approach to two overdetermined eigenvalue problems of Pompeiu type %J ESAIM. Proceedings %D 1997 %P 235-241 %V 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1051/proc:1997007/ %R 10.1051/proc:1997007 %G en %F EP_1997_2_a17