TY - JOUR AU - Giulio Ciraolo AU - Rolando Magnanini AU - Shigeru Sakaguchi TI - Symmetry of minimizers with a level surface parallel to the boundary JO - Journal of the European Mathematical Society PY - 2015 SP - 2789 EP - 2804 VL - 17 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4171/jems/571/ DO - 10.4171/jems/571 ID - JEMS_2015_17_11_a2 ER -