On the subword complexity and square-freeness of formal languages.- Cycle-free IN-algebraic systems.- On the height of syntactical graphs.- Boolean functions whose monotone complexity is of size n2/log n.- Netzwerke zur simultanen Berechnung Boolescher Funktionen (Ausführliche Kurzfassung).- The computational complexity of bilinear multiplications.- P - complete problems in free groups.- Quelques proprietes des langages a un Compteur.- Un resultat de discontinuite dans les familles de langages.- Verallgemeinerte kommutative Sprachen.- Ein rein automatentheoretischer Aufbau der Theorie der kontext-freien Sarachen.- Un analogue du theoreme des varietes pour les cones et les cylindres.- A family of graphs with expensive depth-reduction.- On ?-balanced binary search trees.- Erzeugung optimalen Codes für Series - Parallel Graphs.- Recent directions in algorithmic research.- Dynamic k-dimensional multiway search under time-varying access frequencies.- Some applications of CFL's over infinite alphabets.- A decidable property of iterated morphisms.- Prefix-preservation for rational partial functions is decidable.- Concurrency and automata on infinite sequences.- An effective retract calculus.- Recursion and complexity theory on CPO-S.- Computable algebras, word problems and canonical term algebras.- Reachability analysis with assertion systems.- Dynamization of decomposable searching problems yielding good worst-case bounds.- Robust balancing in B-trees.- Centers of languages.- (Erasing)* strings.