%0 Journal Article %A Han, Yingbo %A Feng, Shuxiang %T The first eigenvalue of spacelike submanifolds in indefinite space form $R^{n+p}_p$ %J Archivum mathematicum %D 2011 %P 77-82 %V 47 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_2011__47_2_a0/ %G en %F ARM_2011__47_2_a0