@Article{isprs-annals-VIII-4-W1-2021-1-2021,
AUTHOR = {Coors, V. and Rodrigues, P. and Ellul, C. and Zlatanova, S. and Laurini, R. and Rumor, M.},
TITLE = {PREFACE},
JOURNAL = {ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences},
VOLUME = {VIII-4/W1-2021},
YEAR = {2021},
PAGES = {1--2},
URL = {https://isprs-annals.copernicus.org/articles/VIII-4-W1-2021/1/2021/},
DOI = {10.5194/isprs-annals-VIII-4-W1-2021-1-2021}
}