TY  - JOUR
AU  - Clarke, Frank H.
TI  - Pointwise Contraction Criteria for the Existence of Fixed Points
JO  - Canadian mathematical bulletin
PY  - 1978
SP  - 7
EP  - 11
VL  - 21
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1978-002-8/
DO  - 10.4153/CMB-1978-002-8
ID  - 10_4153_CMB_1978_002_8
ER  -