References

Cottam, G. and Curtis, J.T. (1956). The use of distance measures in phytosociological sampling. Ecology, 37(3), 451-460.

Morisita, M. (1954). Estimation of population density by spacing method. Memoranda of the Faculty of. Science, Kyushu University, Series E (1), 187-197.

Smith, R.L. (1990). Student Resource Manual to Accompany Ecology and Field Biology, 4th Edition. Harper & Row, New York.