1. Anastasi G. (1983). “Geschiebeanalysen im Felde unter Berucksichtigung von Grosskomponenten.” Versuchsanstalt fur Wasserbau ETH Zurich Switzerland Mitteilung 70 (in German).
2. Church M. A. McLean D. G. and Wolcott J. F. (1987). “River bed gravels: Sampling and analysis.” Sediment transport in gravel bed rivers C. R. Thorne J. C. Bathurst and R. D. Hey eds. John Wiley & Sons Ltd. London U.K. 43–88.
3. On The Accuracy Of Bed-Material Sampling
4. Diplas P. (1989). “Areal sampling techniques.” Proc. of the Int. Symp. on Sediment Transp. Modeling 380–385.
5. Diplas P. (1991). “Interaction of fine sediment with coarse gravel matrix.” Proc. of the Fifth Federal Interagency Sediment Conf.