IO-Macrolanguages and Attributed Translations - Jürgen Duske; Rainer Parchmann; M. Sedello; Johann Specht (Inf. Control., 1977)

A Homomorphic Characterization of Indexed Languages. - Jürgen Duske; Rainer Parchmann; Johann Specht (J. Inf. Process. Cybern., 1979)

Szilard Languages of IO-Grammars - Jürgen Duske; Rainer Parchmann; Johann Specht (Inf. Control., 1979)

On Deterministic Indexed Languages - Rainer Parchmann; Jürgen Duske; Johann Specht (Inf. Control., 1980)

Closure Properties of Deterministic Indexed Languages - Rainer Parchmann; Jürgen Duske; Johann Specht (Inf. Control., 1980)

Indexed LL(k) Grammars. - Rainer Parchmann; Jürgen Duske; Johann Specht (Acta Cybern., 1985)