%0 Journal Article
%A Petty, C. M.
%A Crotty, J. M.
%T Characterizations of Spherical Neighbourhoods
%J Canadian journal of mathematics
%D 1970
%P 431-435
%V 22
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-051-9/
%R 10.4153/CJM-1970-051-9
%F 10_4153_CJM_1970_051_9