# Geodata and Tooling Citation

## 1) LVermGeo RLP / GeoShop RLP (terrain, ortho, buildings)

Source: GeoShop RLP - Digitale Gelaendemodelle (DGM)  
Source URL: https://geoshop.rlp.de/digitale_gelaendemodelle/digitale_gelaendemodelle_dgm.html  
GeoShop entry point: https://geoshop.rlp.de/  
Open data portal: https://www.lvermgeo.rlp.de/geodaten-geoshop/open-data  
License: Data Licence Germany - Attribution - Version 2.0 (dl-de/by-2-0)  
License URL: https://www.govdata.de/dl-de/by-2-0  
Accessed: 2026-01-19

Products used:
- DGM1 (Digitales Gelaendemodell, GeoTIFF)
- DOM1 (Digitales Oberflaechenmodell, GeoTIFF)
- DOP20 (Digitale Orthophotos, JP2)
- 3D-Gebaeudemodelle LOD2 (CityGML)
- BDOM20RGBI (Gebaeude-/Objektpunktwolke, LAZ)
- LPOLPG (LAS-Punktwolke, kombiniert; abgeleitete Teilmengen: LPG/LPO)

GeoBasis download patterns used in the pipeline:
- DGM1: `https://geobasis-rlp.de/data/dgm1/current/tif/dgm01_32_{x}_{y}_1_rp.tif`
- DOM1: `https://geobasis-rlp.de/data/dom1/current/tif/dom1_32_{x}_{y}_1_rp_2020.tif`
- DOP20: `https://geobasis-rlp.de/data/dop20rgb/current/jp2/dop20rgb_32_{x}_{y}_2_rp_2023.jp2`
- LoD2 CityGML: `https://geobasis-rlp.de/data/geb3dlo/current/gml/LoD2_32_{x}_{y}_2_RP.gml`
- BDOM20RGBI: `https://geobasis-rlp.de/data/bdom20rgbi/current/las/bdom20rgbi_32_{x}_{y}_2_rp.laz`
- LPOLPG: `https://geobasis-rlp.de/data/las/current/las/lpolpg_32_{x}_{y}_1_rp.laz`

Required attribution (verbatim):
(c) GeoBasis-DE / LVermGeoRP 2026, dl-de/by-2-0, www.lvermgeo.rlp.de

If modified, append:
[Data modified] (or in German: [Daten bearbeitet])

## 2) HydroRIVERS (river network for erosion workflow)

Dataset: HydroRIVERS v1.0 (Europe tile used in pipeline)  
Download URL used by pipeline: https://data.hydrosheds.org/file/HydroRIVERS/HydroRIVERS_v10_eu_shp.zip  
Project page: https://www.hydrosheds.org  
License: Covered by the HydroSHEDS License Agreement (see https://www.hydrosheds.org)  
Accessed: 2026-01-23

Recommended citation (from HydroRIVERS Technical Documentation v1.0):
Lehner, B., Grill G. (2013): Global river hydrography and network routing: baseline data and new approaches to study the world's large river systems. Hydrological Processes, 27(15): 2171-2186. Data is available at www.hydrosheds.org.

## 3) HydroLAKES (lake depth support for erosion workflow)

Dataset: HydroLAKES v1.0 polygon database  
Download URL used by pipeline: https://data.hydrosheds.org/file/hydrolakes/HydroLAKES_polys_v10_shp.zip  
Project page: https://www.hydrosheds.org  
License: Creative Commons Attribution 4.0 International (CC BY 4.0)  
License URL: https://creativecommons.org/licenses/by/4.0/  
Accessed: 2026-01-23

Recommended citation (from HydroLAKES Technical Documentation v1.0):
Messager, M.L., Lehner, B., Grill, G., Nedeva, I., Schmitt, O. (2016): Estimating the volume and age of water stored in global lakes using a geo-statistical approach. Nature Communications: 13603. doi: 10.1038/ncomms13603. Data is available at www.hydrosheds.org.

## 4) GeoData pipeline tools used

Core geospatial and conversion tooling used by `GeoData/geodata_to_unity.py` and `GeoData/geodata_pipeline/`:
- Python (project runtime; configured for 3.11-3.12)
- `uv` (environment and dependency management)
- GDAL / OGR / OSR (`osgeo`) including `gdalbuildvrt`
- PDAL
- citygml-tools 2.4.0
- cjio (`cjio[export,reproject]`)
- laspy (`laspy[lazrs]`)
- NumPy
- SciPy
- scikit-learn
- Shapely
- trimesh
- requests
- tomli-w

Reference implementation locations:
- Dependencies: `GeoData/pyproject.toml`
- Main CLI: `GeoData/geodata_to_unity.py`
- Pipeline modules: `GeoData/geodata_pipeline/`

## 5) Numerical methods and related implementations (BibTeX)

```bibtex
@article{saetra2012,
  title={Shallow Water Simulations on Multiple GPUs},
  author={S{\ae}tra, ML and Brodtkorb, AR},
  year={2012}
}

@book{toro2009,
  title={Riemann Solvers and Numerical Methods for Fluid Dynamics},
  author={Toro, EF},
  edition={3},
  year={2009}
}

@article{kader2022,
  title={A New Variant of Rusanov Scheme},
  author={Kader, ...},
  journal={IJAM},
  year={2022}
}

@article{audusse2004,
  title={A Fast and Stable Well-Balanced Scheme...},
  author={Audusse, E and Bouchut, F and ...},
  year={2004}
}

@github{bshishov2019,
  title={UnityTerrainErosionGPU},
  author={Bshishov, A},
  url={https://github.com/bshishov/UnityTerrainErosionGPU}
}
```