TY - JOUR A1 - Bernutat, Claudia A1 - Böckmann, Christine A1 - Ramlau, Ronny T1 - Examination of the Nonlinear LIDAR-Operator : an Inverse Ill-posed Problem Y1 - 1998 ER - TY - JOUR A1 - Böckmann, Christine A1 - Bernutat, Claudia A1 - Fischer, Silva T1 - The nonlinear LIDAR-equation : an inverse ill-posed problem Y1 - 1998 ER -