1. P. S. Nagpaul, Quasi-quantitative measures of research performance: an assessment of construct validity and reliability,Scientometrics, 33 (1995) 169–185.
2. M. Nyden, Evaluation of R&D in Sweden, In:J. Mayne (Ed.),Advancing Public Policy Evaluation, Elsevier Science Publishers, 1992, p. 159–171.
3. M. J. Ledoux, L. Bach, N. Conde-Molist, M. Matt, V. Schaeffer, Evaluation of the economic effects of Brite/Euram programmes on the European industry. Presentation at theFirst International Conference on Research Evaluation in Thesaloniki, 1995.
4. V. Stolte-Heiskanen, Trends and problems in the evaluation of research, In:E. Kaukonen, V. Stolte-Heiskanen (Eds),Science Studies and Science Policy: Proceedings of a Finnish Bulgarian Symposium, Academy of Finland (Coordination Research Group for Science of Science Studies) and University of Tampere, Finland, 1984.
5. D. Andrich,Rasch Models for Measurement, Sage publications Inc., Murdoch university Australia, 1988.