%0 Journal Article %A Kreith, Kurt %T A self-adjoint “simultaneous crossing of the axis”. %J Georgian Mathematical Journal %D 1994 %P 173-181 %V 1 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/GMJ_1994__1_2_47336/ %G en %F GMJ_1994__1_2_47336