@article{GDZPPN001168711, title = {Proving Inverse-Positivity of Linear Operators by Reduction.}, journal = {Numerische Mathematik}, volume = {15}, year = {1970}, pages = {100-108}, zbl = {0187.09203}, url = {http://dml.mathdoc.fr/item/GDZPPN001168711} }
SCHRÖDER, J. Proving Inverse-Positivity of Linear Operators by Reduction.. Numerische Mathematik, Tome 15 (1970) pp. 100-108. http://gdmltest.u-ga.fr/item/GDZPPN001168711/