Update README.md

README.md

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 ### Punjabi Gurmukhi to Shahmukhi Transliteration System
-This transliteration system is trained on our Punjabi Transliteration Corpus [(PTC)](https://huggingface.co/datasets/SLPG/Punjabi_Transliteration_Corpus).
+Our supervised Punjabi transliteration systems built using unsupervised corpus are bidirectional NMT systems which effectively convert text between Gurmukhi and Shahmukhi scripts. The Gurmukhi-to-Shahmukhi model achieves a 98.1 BLEU score and 99.5% word-level accuracy, while the Shahmukhi-to-Gurmukhi model scores 87.7 BLEU.
 
 ## Corpus Details
   - **Total Sentences:** 6.3 million
@@ -40,5 +40,11 @@ transliteration between Gurmukhi and Shahmukhi scripts.
 
 **If you use our model, kindly cite our [paper]()**:
 ```
-
+@article{Shehzadi2024,
+  title={Unsupervised Punjabi Corpus and Neural Machine Transliteration
+ System},
+  author={Shehzadi Ambreen, Sadaf Abdul Rauf, MG Abbas Malik and Muhammad Imran },      journal={Heliyon},
+  year={2024},
+  note={Under review}
+ }
 ```