@Article{isprs-archives-XLIV-4-W1-2020-75-2020,
AUTHOR = {Lieberman, J. and Roensdorf, C.},
TITLE = {MODULAR APPROACH TO 3D REPRESENTATION OF UNDERGROUND INFRASTRUCTURE IN THE MODEL FOR UNDERGROUND DATA DEFINITION AND INTEGRATION (MUDDI)},
JOURNAL = {The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences},
VOLUME = {XLIV-4/W1-2020},
YEAR = {2020},
PAGES = {75--81},
URL = {https://isprs-archives.copernicus.org/articles/XLIV-4-W1-2020/75/2020/},
DOI = {10.5194/isprs-archives-XLIV-4-W1-2020-75-2020}
}