TY - BOOK AU - Ed by Benci,V et al ED - Cerami, G ED - Degiovanni, M ED - Fortunato, D ED - Giannoni, F ED - Micheletti, A.M TI - Variational & topological methods in the study of nonlinear phenomena T2 - PNLDE 49 SN - 9780817642785 U1 - 515.7 PY - 2002/// CY - Boston PB - Birkhauser ER -