VOLUME 1 1996 NUMBER 3

Symeon Bozapalidis:
Convex Algebras, Convex Modules and Formal Power Series on Trees165–180
Gianina Georgescu:
On the Regularity of Languages Generated by Parallel Communicating Grammar Systems181–197
Jonathan S. Golan, Alexandru Mateescu, Dragoş Vaida:
Semirings and Parallel Composition of Processes199–217
Gheorghe Păun, Grzegorz Rozenberg, Arto Salomaa:
Pattern Grammars219–235