adding citation of dacy paper

README.md

@@ -128,7 +128,7 @@ metrics:
 
 # DaCy tiny
 
-DaCy is a Danish language processing framework with state-of-the-art pipelines as well as functionality for analysing Danish pipelines.
+DaCy is a Danish language processing framework with state-of-the-art pipelines as well as functionality for analysing Danish pipelines (Enevoldsen et al., 2021).
 This model is the **"tiny" Dacy pipeline**, trained on da_news_core_lg vectors for Danish linguistic
 annotation and downstream NLP tasks.
 To read more check out the [DaCy repository](https://github.com/centre-for-humanities-computing/DaCy) for material on how to use DaCy and reproduce the results.
@@ -186,4 +186,7 @@ DaCy also contains guides on usage of the package as well as behavioural test fo
 
 ### Training
 
-This model was trained using [spaCy](https://spacy.io)
+This model was trained using [spaCy](https://spacy.io)
+
+### References
+Enevoldsen, K., Hansen, L., & Nielbo, K. L. (2021). DaCy: A Unified Framework for Danish NLP. https://ceur-ws.org/Vol-2989/short_paper24.pdf