1. Al Sawaf, M. B., Kawanisi, K., Kagami, J., Bahreinimotlagh, M., & Danial, M. M. (2017). Scaling characteristics of mountainous river flow fluctuations determined using a shallow-water acoustic tomography system. Physica A: Statistical Mechanics and its Applications, 484, 11–20.
2. Andersen, I., & Golitzen, K. G. (2005). The Niger river basin: A vision for sustainable management. World Bank Publications.
3. Baker, J., Gloor, M., Boom, A., Neill, D., Cintra, B., Clerici, S., & Brienen, R. (2018). Questioning the influence of sunspots on amazon hydrology: Even a broken clock tells the right time twice a day. Geophysical Research Letters, 45, 1419–1422.
4. Briciu, E. -A., Mihăilă, D., Lazurcă, L. G., Costan, L. -A., Nagavciuc, V., & Bădăkuta, C. A. (2011). Observations on the spatial variability of the Prut river discharges. GEOREVIEW: Scientific Annals of Stefan cel Mare University of Suceava. Geography Series, 20, 45–56.
5. Bridgman, H. A., & Oliver, J. E. (2014). The global climate system: Patterns, processes, and teleconnections. Cambridge University Press.