1. Barber, C. (1991) 'Modern Portfolio Theory; Fact and Fantasy', paper presented as part of the seminar series Property in a Portfolio Context organized by the Society of Property Researchers and the RICS.
2. Brown, G.R. (1991) Property Investment and the Capital Markets, E. & F.N. Spon, London.
3. Cullen, I. (1991) 'Risk Management in Investment Property Portfolios', paper presented as part of the seminar series Property in aportfolio context organized by the Society of Property Researchers and the RICS.
4. Hoesli, M. and MacGregor, B. (1995), The Classification of Local Property Markets in the UK Using Cluster Analysis, in The Cutting Edge:Proceedings of the RICS Property Research Conference 1995, Volume 1, RICS, London, pp. 185-204.
5. IPD (1996) IPD Property Investor's Digest 1996, Investment Property Databank, London.