Update README.md

README.md

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 ## Model Description
 
-This is the EnvRoBERTa-base language model. A language model that is trained to better understand environmental texts in the ESG domain.
+Based on [this paper](https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4622514), this is the EnvRoBERTa-base language model. A language model that is trained to better understand environmental texts in the ESG domain.
 
 Using the [RoBERTa](https://huggingface.co/roberta-base) model as a starting point, the EnvRoBERTa-base Language Model is additionally pre-trained on a text corpus comprising environmental-related annual reports, sustainability reports, and corporate and general news.
 
@@ -19,7 +19,8 @@ Using the [RoBERTa](https://huggingface.co/roberta-base) model as a starting poi
 @article{Schimanski23ESGBERT,
     title={{Bridiging the Gap in ESG Measurement: Using NLP to Quantify Environmental, Social, and Governance Communication}},
     author={Tobias Schimanski and Andrin Reding and Nico Reding and Julia Bingler and Mathias Kraus and Markus Leippold},
-    year={2023}
+    year={2023},
+    journal={Available on SSRN: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4622514},
 }
 ```