Heimsath et al. 1997. - Heimsath, A. M.; Dietrich, W. E.; Nishiizumi, K.; Finkel, R. C. (1997). "The soil production function and landscape equilibrium". Nature. 388 (6640): 358–361. Bibcode:1997Natur.388..358H. doi:10.1038/41056. https://doi.org/10.1038%2F41056
Heimsath, A. M.; Dietrich, W. E.; Nishiizumi, K.; Finkel, R. C. (1997). "The soil production function and landscape equilibrium". Nature. 388 (6640): 358–361. Bibcode:1997Natur.388..358H. doi:10.1038/41056. /wiki/William_E._Dietrich
The humped soil production function Arjun Heimsath. Arizona State University, Earth and Space Exploration https://serc.carleton.edu/42696