%0 Journal Article %A Hershkowitz, Daniel %A Mashal, Nira %T $P^\alpha$-matrices and Lyapunov scalar stability %J The electronic journal of linear algebra %D 1998 %P 39-47 %V 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ELA_1998__4__a1/ %G en %F ELA_1998__4__a1