Cumfreq, a free computer program for cumulative frequency analysis and probability distribution fitting. [1]
Ritzema (ed.), H.P. (1994). Frequency and Regression Analysis. Chapter 6 in: Drainage Principles and Applications, Publication 16, International Institute for Land Reclamation and Improvement (ILRI), Wageningen, The Netherlands. pp. 175-224. ISBN90-70754-33-9.