%0 Journal Article
%A Pawlak, Ryszard J.
%T On Darboux points and the perfectly closed class of functions
%J Acta Universitatis Lodziensis. Folia Mathematica
%D 1991
%V 04
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AULFM_1991_04_a6/
%G en
%F AULFM_1991_04_a6