%0 Journal Article
%A N. Singh
%T Spherical Probable Error (Spe) and its Estimation
%J Metrika
%D 1970
%P 149-163
%V 15
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MET_1970__15_175429/
%F MET_1970__15_175429