Add acknowledgement

README.md

@@ -92,6 +92,7 @@ For a full instruction manual of the configuration files, see [configuration](./
 - HLRN: [https://hlrn.de](https://hlrn.de)
 - ForestFactory: [https://git.ufz.de/angermue/forestfactory](https://git.ufz.de/angermue/forestfactory) 
 - Helios++: [https://github.com/3dgeo-heidelberg/helios](https://github.com/3dgeo-heidelberg/helios)
+- Janika Schäfer et al. "<i>Applications of synthetic airborne laser scanning data of forests.</i>", ForestSat Conference 2022
 
 # 4. Citation
 
@@ -109,4 +110,4 @@ If you used this tool in your research, please cite as follows:
 
 # 5. Contacts
 
-If there are any issues or questions, feel free to contact Ali [adoosth@gwdg.de](mailto:adoosth@gwdg.de) or Hauke [hauke.kirchner@gwdg.de](mailto:hauke.kirchner@gwdg.de)
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+If there are any issues or questions, feel free to contact Ali Doosthosseini [adoosth@gwdg.de](mailto:adoosth@gwdg.de) or Hauke Kirchner [hauke.kirchner@gwdg.de](mailto:hauke.kirchner@gwdg.de)
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