TY  - JOUR
AU  - C. Alsina
AU  - A. Sklar
TI  - A characterization of continuous associative operations whose graphs are ruled surfaces.
JO  - Aequationes mathematicae
PY  - 1987
SP  - 114
EP  - 119
VL  - 33
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1987__33_137208/
ID  - AM2_1987__33_137208
ER  -