%0 Journal Article %A Ostrowski, A. M. %T A regularity condition for a class of partitioned matrices %J Compositio Mathematica %D 1962-1964 %P 23-27 %V 15 %I Kraus Reprint %U http://www.numdam.org/item/CM_1962-1964__15__23_0/ %G en %F CM_1962-1964__15__23_0