%0 Journal Article %A A. Pliƛ %T A method of determining the existence domain for solutions of partial differential equations of the first order %J Annales Polonici Mathematici %D 1956 %P 183-188 %V 3 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-3-2-183-188/ %R 10.4064/ap-3-2-183-188 %G en %F 10_4064_ap_3_2_183_188