Update README.md

README.md

@@ -9,9 +9,13 @@ configs:
     path: dataset.csv
 ---
 
-The SAR data are obtained from the UMBRA Open Data Program: https://umbra.space/open-data/
+The SAR data are obtained from the UMBRA Open Data Program (https://umbra.space/open-data/).
+
 The dataset has been created combining the WorldCover by ESA (https://esa-worldcover.org/en) with the UMBRA images.
-Additionally BIOME information has been extracted from the RESOLVE biome dataset.
+
+BIOME information has been extracted from the RESOLVE biome dataset (https://ecoregions.appspot.com/).
+
+Reverse geo-coding with OSM nominatim (https://nominatim.openstreetmap.org).
 
 (more details asap)