TY  - JOUR
AU  - Pták, Vlastimil
TI  - A quantitative refinement of the closed graph theorem
JO  - Czechoslovak Mathematical Journal
PY  - 1974
SP  - 503
EP  - 506
VL  - 24
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1974.101265/
DO  - 10.21136/CMJ.1974.101265
LA  - en
ID  - 10_21136_CMJ_1974_101265
ER  -