TY  - JOUR
AU  - M. Himmel
AU  - J. Matkowski
TI  - Directional Convexity and Characterizations of Beta and Gamma Functions
JO  - Journal of convex analysis
PY  - 2018
SP  - 927
EP  - 938
VL  - 25
IS  - 3
UR  - http://geodesic.mathdoc.fr/item/JCA_2018_25_3_JCA_2018_25_3_a10/
ID  - JCA_2018_25_3_JCA_2018_25_3_a10
ER  -