1. Adam, D.: Planung und Entscheidung. Gabler: 4th edition. Wiesbaden, Germany, 1996.
2. Agarwal, S. et al.: On the computation of multidimensional aggregates. In: Proceedings of the 22nd International Conference on Very Large Data Bases, San Francisco, CA, 1996, S. 506-521.
3. Allison, G. T.: Essence of Decisions. Little, Brown. Boston, MA, USA, 1971.
4. Ansoff, H. I.: Corporate Strategy. McGraw-Hill. New York, NY, USA, 1965.
5. Ansoff, H. I. et al.: Implanting strategic management. Prentice-Hall: 2nd edition. London, 1990.