1. 1. Robinson, J., “Software Packages: Beware the Black Box”, Journal
of Valuation, Vol. 5 No. 4, 1987, pp. 433‐6.
2. 2. Byrne, P.J., “Software Packages: Beware the Black Box – The Saga
Continues”, Journal of Valuation, Vol. 6 No. 2, 1988, pp. 182‐6.
3. 3. Dixon, T.J., Hargitay, S.E. and Bevan, O.A., Microcomputers in
Property Surveyor′s Guide to Lotus 123 and dbase IV, E&FN Spon,
London, 1991.
4. 4. Matysiak, G.A., “Optimizing Property Portfolio Holdings: A
Scenario‐assisted Approach”, Journal of Property Finance, Vol.
3/4, 1993, pp. 68‐75.
5. 5. Lee, S., “Emerging Concepts for the Management of Portfolios and the
Role of Research”, Property in the Portfolio Context, Society of Property
Researchers, London, 1992.