1. Fractals Everywhere;Barnsley,1988
2. Dynamic Hydrology;Eagleson,1970
3. Fractals;Feder,1988
4. Comparison of drainage on topographic maps of the Piedmont province;Giusti~;U.S. Geol. Surv., Prof. Pap. 450-E,1962
5. Interrelationships of watershed characteristics;Gray;J. Geophys. Res.,1961