- Relational Mathematics
- Relations and Graphs: Discrete Mathematics for Computer Scientists (E a T C S Monographs on Theoretical Computer Science)
- Theory and Applications of Relational Structures as Knowledge Instruments: COST Action 274, TARSKI, Revised Papers (Lecture Notes in Computer Science)
- Modelling Potential Malaria Spread in Germany by Use of Climate Change Projections: A Risk Assessment Approach Coupling Epidemiologic and Geostatistical Measures
- Plant Phenology as a Biomonitor for Climate Change in Germany: A Modelling and Mapping Approach