%0 Journal Article %A J. SCHRÖDER %T Proving Inverse-Positivity of Linear Operators by Reduction. %J Numerische Mathematik %D 1970 %P 100-108 %V 15 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1970__15_131977/ %F NUMA_1970__15_131977