Media type: E-Article Title: Calibration and accuracy assessment in a direct georeferencing system for UAS photogrammetry Contributor: Gabrlik, Petr; Cour-Harbo, Anders la; Kalvodova, Petra; Zalud, Ludek; Janata, Premysl imprint: Informa UK Limited, 2018 Published in: International Journal of Remote Sensing Language: English DOI: 10.1080/01431161.2018.1434331 ISSN: 0143-1161; 1366-5901 Keywords: General Earth and Planetary Sciences Origination: Footnote: