TY  - JOUR
TI  - Errata
JO  - Canadian mathematical bulletin
PY  - 1978
SP  - 508
EP  - 508
VL  - 21
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1978-088-4/
DO  - 10.4153/CMB-1978-088-4
ID  - 10_4153_CMB_1978_088_4
ER  -