TY - BOOK AU - Seminar in partial differential equations(20th AU - Drabek, Pavel, ed. TI - Topological and variational methods for nonlinear boundary value problems T2 - Pitman research notes in mathematics series SN - 0582309212 U1 - 515.353 PY - 1997/// CY - England PB - Addison Wesley Longman Limited ER -