TY  - JOUR
TI  - BCM volume 63 Issue 3 Cover and Front matter
JO  - Canadian mathematical bulletin
PY  - 2020
SP  - f1
EP  - f2
VL  - 63
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/S0008439520000272/
DO  - 10.4153/S0008439520000272
ID  - 10_4153_S0008439520000272
ER  -