TY - BOOK AU - Forster, Karl-Heinz AU - TI - Operator theory in Krein spaces and nonlinear Eigenvalue problems SN - 3-7643-7452-7 U1 - 517.98:517.927 PY - 2006/// CY - Basel PB - Birkhauser Verlag KW - operator theory KW - Krein Spaces KW - eigenvalues ER -