Inverse and Improperly Posed Problems in Differential Equations: Proceedings of the Conference on Mathematical and Numerical Methods held in Halle, Saale (GDR) from May 29 to June 2, 1979

Basics of Math

Nonlinear Dynamics and Quantum Dynamical Systems: Contributions to the International Seminar ISAM–90, held in Gaussig (GDR), March 19–23,1990

Decidability and Generalized Quantifiers

Introduction to the Spectral Theory of Operators in Spaces with an Indefinite Metric

Ergodic Theory and Related Topics: Proceedings of the Conference held in Vitte/Hiddensee (GDR), October 19–23, 1981

Singularly Perturbed Differential Equations

Markov Decision Problems with Countable State Spaces: Optimality Criteria, Algorithms, Clustering

Invertibility and Asymptotics of Toeplitz Matrices

Numerical Analysis of Selected Semilinear Differential Equations

Singular Ordinary Differential Operators and Pseudodifferential Equations

Lotka-Volterra-Approach to Cooperation and Competition in Dynamic Systems: Proceedings of the 5th Meeting of UNESCO’s Working Group on System Theory held on the Wartburg, Eisenach (GDR) March 5–9, 1984