Linköping University - Formal methods in verification of real-time and embedded systems, including discrete and hybrid models, applications of temporal logic, symbolic model checking, automata-based decompositional proof techniques.

Columbia University - operating systems, end-to-end system resource management, real-time interactive multimedia systems, network and thin-client computing, ubiquitous computing architectures, performance evaluation.

Royal Institute of Technology, Stockholm, Sweden. Algorithms and data structures, sorting and searching, tries, routing.

Technische Universität München - Automatic and interactive theorem proving, formal verification, formalizing programming languages, type systems, semantics, rewriting and unification, lambda-calculus.