Bobkowska, Katarzyna, Adam Inglot, Marek Przyborski, Jędrzej Sieniakowski, and Paweł Tysiąc. 2017. “Low-Level Aerial Photogrammetry As a Source of Supplementary Data for ALS Measurements”. International Conference “Environmental Engineering” 10 (January): 1-6. https://doi.org/10.3846/enviro.2017.168.