Formal description of programming concepts -- Electronic category theory -- An essay about research on sparse NP complete sets -- Some theoretical aspects of applicative multiprocessing -- On some discrete optimization problems in mass storage systems -- Abstract data types: A retrospective and prospective view -- Controlling behaviours of systems : Some basic concepts and some applications -- Conceptual relations between databases transformed under join and projection -- The weighted Sperner's Set problem -- Proof of a concurrent program finding Euler paths -- A theoretical basis for the systematic proof method -- Consistent semantics for a data flow language -- Analog processes -- An extended polymorphic type system for applicative languages -- A criterion of undecidability of algorithmic theories -- On 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.