TY  - JOUR
AU  - J. J. Charatonik
TI  - The set function T and homotopies
JO  - Colloquium Mathematicum
PY  - 1978
SP  - 271
EP  - 274
VL  - 39
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-39-2-271-274/
DO  - 10.4064/cm-39-2-271-274
LA  - en
ID  - 10_4064_cm_39_2_271_274
ER  -