A unifying approach to theorems on preservation and interpolation for binary relations between structures. - Hugo Volger (Arch. Math. Log., 1981)

Rudimentary relations and Turing machines with linear alternation. - Hugo Volger (Logic and Machines, 1983)

Turing Machines with Linear Alternation, Theories of Bounded Concatenation and the Decision Problem of First Order Theories. - Hugo Volger (Theor. Comput. Sci., 1983)

Some Results on Addition/Subtraction Chains. - Hugo Volger (Inf. Process. Lett., 1985)

Some Results on the Complexity of Powers. - Thomas Lickteig; Hugo Volger (Computation Theory and Logic, 1987)

Model Theory of Deductive Databases. - Hugo Volger (CSL, 1987)

The Semantics of Disjunctive Deductive Databases. - Hugo Volger (CSL, 1989)

Initial and Quasiinitial Models of Theories. - Hugo Volger (Fundam. Informaticae, 1993)

Grammars with generalized contextfree rules, their tree automata. - Hugo Volger (CLIN, 1999)

A Note on Definable Operators on Structures. - Hugo Volger (Algorithmic Algebra and Logic, 2005)