TY - JOUR AU - Biagio Ricceri TI - A bifurcation theory for some nonlinear elliptic equations JO - Colloquium Mathematicum PY - 2003 SP - 139 EP - 151 VL - 95 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm95-1-12/ DO - 10.4064/cm95-1-12 LA - en ID - 10_4064_cm95_1_12 ER -