Update README.md

README.md

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 Model is developed in support of the University of Belgrade doctoral dissertation "Composite pseudogrammars based on parallel language models of Serbian" by Mihailo Škorić.
 
-This small gpt-2 model was trained on several corpora for Serbian, including ["The corpus of Contemporary Serbian"](https://drive.google.com/file/d/1wRgoWer6YULGCXR0zWOl1fVA6VIe1DOR), [SrpELTeC](https://drive.google.com/file/d/1RtBXyw5Cdh6y_cqbJoMlYhSwNFydBRUv) and WikiKorpus by [JeRTeh – Society for Language Resources and Technologies](https://jerteh.rs/).
+This small gpt-2 model was trained on several corpora for Serbian, including ["The corpus of Contemporary Serbian"](https://drive.google.com/file/d/1wRgoWer6YULGCXR0zWOl1fVA6VIe1DOR), [SrpELTeC](https://drive.google.com/file/d/1RtBXyw5Cdh6y_cqbJoMlYhSwNFydBRUv) and WikiKorpus by [JeRTeh – Society for Language Resources and Technologies](https://jerteh.rs/).
+
+<b style="color:red">This model is purely experimental! For actual models for Serbian see <a href="https://huggingface.co/jerteh/gpt2-orao" style="color:blue;font-weight:bold">GPT2-ORAO</a> and <a style="color:blue;font-weight:bold" href="https://huggingface.co/jerteh/gpt2-orao">GPT2-VRABAC</a></b>
+<br/><b>If you use this model for your reseach please cite:  [https://doi.org/10.3390/math11224660](https://doi.org/10.3390/math11224660)</b>