The impact of computing on education in Bulgaria. Educational tecnology, 32 (12) 1992, 37-49.
The Bulgarian Strategy of Introducing New Information Technologies in Education. In: Proceedings of WCCE'90. North-Holland. 1990.
Research and Development Projects in Bulgarian Experimental Schools. In: Proceedings of WCCE'90. North-Holland. 1990.
Software Engineering for Portability. Monograph in: Journal of Research on Computing in Education. Vol. 23. No. 2. Winter 1990.
Software Engineering Principles in the Building of Decision Support Systems. In: Methodology and Software for Interactive Decision Support. Proceedings. Albena. Bulgaria. 1987. In: Lecture Notes in Economics and Mathematical Systems. 337, Springer Verlag. 1989.
Children in the Information Age: Opportunities for Creativity, Innovation and New Activities. Editor of Selected Papers from the Second International Conference. Sofia, Bulgaria. 19-23 May 1987. Pergamon Press. 1988.
Structural Entropy, A New Approach for Systems Structures Analysis. R. Trappl (Ed.). Cybernetics and Systems '86. R. Reidel Publishing Company. 1986.
Children in the Information Age: Tomorrow's Problems Today. Editor of Selected Papers from the First International Conference, Varna, Bulgaria. 6-9 May 1985 (co-editor Bl. Sendov). Pergamon Press. 1986.
Interactive Decision Analysis for Strategic Management. In: Large-Scale Modelling and Interactive Decision Analysis, Proceedings, Eisenach. GDR. 1985. In: Lecture Notes in Economics and Mathematical Science. G. Fandel u.a. (Ed.). 273. Springer Verlag.
Modelling the Structure of Economic Systems. Syst. Anal. Model. Simul. 2 (1985). 323-335.
Teaching Children with Personal Computers. IIASA, Selected Papers from the Task-Force Meeting "Children and Computers", Albena, Bulgaria. 3-4 May 1984. Tibor Vasko (Ed.), March 1985 CP-85-8.
A Linguistic Approach to Decision Making with Interdependent Goals. European Journal of OR. Special Issue. Selected Papers from EURO VI, Vienna. 1983.
Fuzzy Structural Modelling - An Aid for Decision Making, Analysing and Aiding Decision Processes. P. Humphreys, O. Svenson and A. Vari (Eds.), Akademiai Kiado, Budapest. 1983.
An Approach to Multi-objective Decision Making with Ordinal Information. In: Cybernetics and System Research. R. Trapple (Ed.). North-Holland Publishing Company. 1982.
Graph-Analytical Methods for Structural Analysis. In: Proceedings of the Third Congress of the World Organisation for General Systems and Cybernetics WOGSC 1975: Modern Trends in Cybernetics and Systems, Vol.1 pp.815-830.
Verfahren der Daten Organization. Verlag Technik, Berlin. 1976.
Graphen-Theoretische Methoden zur Strukturanalyse and ihre Anwendung bei Gestaltung von Organizationen, Institut fur Gesellschaft und Wirtschaft Wissenschaften der Universit?t Bonn, 1975. Ver?ffentlichungen der Betriebs Wirtschaftlichen Abteilung I, No. 54.