TY  - JOUR
AU  - Page, S.
TI  - When Flats are Torsion Free
JO  - Canadian mathematical bulletin
PY  - 1974
SP  - 559
EP  - 561
VL  - 17
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-099-6/
DO  - 10.4153/CMB-1974-099-6
ID  - 10_4153_CMB_1974_099_6
ER  -