%0 Journal Article
%A Adachi, Toshiaki
%T Spherical Mean and the Fundamental Group
%J Canadian mathematical bulletin
%D 1991
%P 3-11
%V 34
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1991-001-2/
%R 10.4153/CMB-1991-001-2
%F 10_4153_CMB_1991_001_2