Volume 72, Number 1, 1990
Lothar Budach:
Topological Invariants of Classification Problems.
3-26
Kosaburo Hashiguchi:
Improved Limitedness Theorems on Finite Automata with Distance Functions.
27-38
Imre Simon:
Factorization Forests of Finite Height.
65-94
Volume 72, Number 2&3, 1990