Andrle and Abrahams (1989) present the results of a rigourous test of self-similarity on profiles and transects obtained from talus slopes. The aim of their paper is to show that the self-similar fractal model (SSFM) is of limited usefulness
Two methods of study have been used : (1) assessments of the mass strength of rock units forming the slopes, using the method of Selby (1980) and the data plotting method and definition of the strength equilibrium envelope of Abrahams and Parsons