The following publications are possibly variants of this publication:
- Restrictions on NLC Graph GrammarsAndrzej Ehrenfeucht, Michael G. Main, Grzegorz Rozenberg. TCS, 31:211-223, 1984.
- A Survey of NLC GrammarsDirk Janssens, Grzegorz Rozenberg. caap 1983: 114-128
- Boundary NLC GrammarsGrzegorz Rozenberg, Emo Welzl. caap 1984: 257-270
- Restrictions, extensions, and variations of NLC grammarsDirk Janssens, Grzegorz Rozenberg. isci, 20(3):217-244, 1980. [doi]
- Handle NLC Grammars and R.E. LanguagesMichael G. Main, Grzegorz Rozenberg. jcss, 35(2):192-205, 1987.