1. A.V. Aho/ J.D. Ullman: Principles of Compiler Design, Reading: Addison-Wesley (1977).
2. W. Altmann: A new module concept for design of reliable software, Applied Computer Science 14, 155–166, München: Hanser-Verlag (1979).
3. Notizen zum Interaktiven Programmieren;B Austermühl,1979
4. F.L. Bauer et al.: Program Development by Transformation, Section III of F.L. Bauer (Ed.): Program Construction, Lect. Notes Comp. Sci 69, 235–92 (1979).
5. M. Berthaud/M. Griffiths: Incremental Compilation and Conversational Interpretation, Ann. Rev. Autom. Programming 7, 2, 95–114 (1973).