TY  - JOUR
AU  - Lee, Cheng Ming
TI  - An existence theorem via an intuitive idea and fixed-point theorems
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1978
SP  - 715
EP  - 725
VL  - 19
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1978__19_4_a8/
LA  - en
ID  - CMUC_1978__19_4_a8
ER  -