%0 Journal Article
%A A. Pelczar
%T Some qualitative problems in the theory of second order partial differential equations
%J Annales Polonici Mathematici
%D 1990
%P 1-17
%V 52
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap-52-1-1-17/
%R 10.4064/ap-52-1-1-17
%G en
%F 10_4064_ap_52_1_1_17