TY  - JOUR
AU  - Richard J. Gardner
AU  - Daniel Hug
AU  - Wolfgang Weil
TI  - Operations between sets in geometry
JO  - Journal of the European Mathematical Society
PY  - 2013
SP  - 2297
EP  - 2352
VL  - 15
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4171/jems/422/
DO  - 10.4171/jems/422
ID  - JEMS_2013_15_6_a11
ER  -