%0 Journal Article
%A S. P. Hastings
%T On the existence of a solution of a system ẋ= f(t, x) which remains in a given set
%J Annales Polonici Mathematici
%D 1967
%P 201-205
%V 19
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap-19-2-201-205/
%R 10.4064/ap-19-2-201-205
%G en
%F 10_4064_ap_19_2_201_205