%0 Journal Article %A Chavel, Isaac %A Feldman, Edgar A. %T The first eigenvalue of the laplacian on manifolds of non-negative curvature %J Compositio Mathematica %D 1974 %P 43-53 %V 29 %N 1 %I Noordhoff International Publishing %U http://archive.numdam.org/item/CM_1974__29_1_43_0/ %G en %F CM_1974__29_1_43_0