finding the optimal access path to resolve a relational data base query.- Compound algebraic implementations: An approach to stepwise refinement of software systems.- On and/or schemes.- A term model for CCS.- A mathematical approach to multi-pass parsing.- Abstract implementation of abstract data types.- Parallel algorithms in graph theory: Planarity testing (preliminary version).- On atomic nets and concurrency relations.- Node-label controlled graph grammars (Extended abstract).- A method to compare the descriptive power of different types of Petrinets.- A simple class of algorithmic specifications for abstract software modules.- Inducing patterns of behaviour in distributed system parts.- Van wijngaarden grammars as a special information processing model.- Approaches to concurrency in B-trees.- On a subclass of pseudopolynomial problems.- Decidability of reachability in persistent vector replacement systems.- Generalized heapsort.- Decidability results on a query language for data bases with incomplete information.- New results on completeness and consistency of abstract data types.- Asymptotic complexity of game-searching procedures.- Completeness in classical logic of complex algorithms.- Initially ¿ Restricting algebraic theories.- Schemes for nonsequential processing systems.- Dynamic algebras which are not Kripke structures.- Time and space bounds in producing certain partial orders.- Axioms of algorithmic logic univocally determine semantics of programs.- A logical approach to the problem ¿P=NP?¿.- Verifying concurrent system specifications in COSY.- Deadlocks and livelocks in transition systems.- Descriptional complexity of concurrent processes (preliminary version).- A uniform approach to applicative and imperative features in programming languages.- A resource allocation problem.- An 0(n 2 lognloglogn) expected time algorithm for the all shortest distance problem.- Decision complexity of variants of propositional dynamic logic.- Relativized obliviousness.- Abstract data types as lattices of finitely generated models.- The LR(k) parser.- Substitution systems ¿ A family of system models based on concurrency.