@INPROCEEDINGS{Gabrlik2018CalibrationAccuracyAssessment,
author = {G{\'a}brl{\'i}k, P. and Cour-Harbo, A.L. and Kalvodov{\'a}, P. and {\v Z}alud, L. and Janata, P.},
title = {Calibration and accuracy assessment in a direct georeferencing system for UAS photogrammetry},
journal = {International Journal of Remote Sensing},
volume = {39},
number = {15-16},
pages = {4931--4959},
year = {2018}
}