%0 Journal Article
%A Dragutin Djurović
%T Sur l
%J Publications of the Department of Astronomy
%D 1978
%P 37 - 42
%V 8
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PDA_1978_8_1_a1/
%F PDA_1978_8_1_a1