@Article{isprs-annals-XII-4-W2-2026-65-2026,
AUTHOR = {Jeddoub, I. and Lei, B. and Biljecki, F. and Hajji, R. and Billen, R.},
TITLE = {Urban Digital Twins in Practice: A Survey-Based Analysis of Data Integration Levels and Approaches},
JOURNAL = {ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences},
VOLUME = {XII-4/W2-2026},
YEAR = {2026},
PAGES = {65--72},
URL = {https://isprs-annals.copernicus.org/articles/XII-4-W2-2026/65/2026/},
DOI = {10.5194/isprs-annals-XII-4-W2-2026-65-2026}
}