1. Regulated Rewriting in Formal Language Theory;Dassow,1989
2. Context-free-like forms for the phrase-structure grammars;Geffert,1988
3. Scattered context grammars;Greibach;Journal of Computer and System Sciences,1969
4. T. Masopust, Formal models: Regulation and reduction, Ph.D. Thesis, Brno University of Technology, Faculty of Information Technology, Brno, 2007
5. A trivial method of characterizing the family of recursively enumerable languages by scattered context grammars;Meduna,1995