1. Addicott, J.F., Aho, J.M., Antolin, M.F., Padilla, D.K., Richardson, J.S. and Soluk, D.A. 1987. Ecological neighborhoods: scaling environmental patterns. Oikos 49: 340–346.
2. Allen, T.F.H. and Starr, T.B. 1992. Hierarchy. University of Chicago Press, Chicago.
3. Allen, T.F.H., O’Neill, R.V. and Hoekstra, T.W. 1987. Interlevel relations in ecological research and management: some working principles from hierarchy theory. Journal of Applied Systems Analysis 14: 63–79.
4. Burgess, R.L. and Sharpe, D.M., eds. 1981. Forest island dynamics in man-dominated landscapes, Springer-Verlag, New York.
5. Burrough, P.A. 1986. Principles of geographic information systems for land resources assessment. Clarendon Press, Oxford.