TY - JOUR AU - CANDITO, PASQUALE AU - LIVREA, ROBERTO AU - MOTREANU, DUMITRU TI - 2-SYMMETRIC CRITICAL POINT THEOREMS FOR NON-DIFFERENTIABLE FUNCTIONS JO - Glasgow mathematical journal PY - 2008 SP - 447 EP - 466 VL - 50 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089508004333/ DO - 10.1017/S0017089508004333 ID - 10_1017_S0017089508004333 ER -