Cressie, N.A.C. Statistics for spatial data.
John Wiley and Sons, 1991. Diggle, P.J. Statistical analysis of spatial point patterns.
Academic Press, 1983.
Ohser, J. (1983)
On estimators for the reduced second moment measure of
point processes. Mathematische Operationsforschung und
Statistik, series Statistics, 14, 63 -- 71.
Ripley, B.D. Statistical inference for spatial processes.
Cambridge University Press, 1988.
Stoyan, D, Kendall, W.S. and Mecke, J. (1995)
Stochastic geometry and its applications.
2nd edition. Springer Verlag.
Stoyan, D. and Stoyan, H. (1994)
Fractals, random shapes and point fields:
methods of geometrical statistics.
John Wiley and Sons.