%0 Journal Article
%A Hubert Kalf
%T A Limit-Point Criterion for Separated Dirac Operators and a Little Known Result on Riccati's Equation.
%J Mathematische Zeitschrift
%D 1972
%P 75-82
%V 129
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1972__129_171821/
%F MZ_1972__129_171821