TY - JOUR A1 - Niedzielski, T. A1 - Witek, M. A1 - Spallek, W. T1 - Observing river stages using unmanned aerial vehicles JO - Hydrol. Earth Syst. Sci. J1 - HESS VL - 20 IS - 8 SP - 3193 EP - 3205 Y1 - 2016/08/09 PB - Copernicus Publications SN - 1607-7938 UR - https://hess.copernicus.org/articles/20/3193/2016/ L1 - https://hess.copernicus.org/articles/20/3193/2016/hess-20-3193-2016.pdf DO - 10.5194/hess-20-3193-2016 ER -