Ker-I Ko:
On Some Natural Complete Operators. 1-30
Grzegorz Rozenberg:
On Coordinated Selective Substitutions: Towards a Unified Theory of Grammars and Machines. 31-50
Luc Bougé:
A Contribution to the Theory of Program Testing. 151-181
Andrzej Tarlecki:
On the Existence of Free Models in Abstract Algebraic Institutuons. 269-304