An Open Source Punjabi Resource Grammar Shafqat Mumtaz Virk author Muhammad Humayoun author Aarne Ranta author 2011-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing 2011 Ruslan Mitkov editor Galia Angelova editor Association for Computational Linguistics Hissar, Bulgaria conference publication virk-etal-2011-open https://aclanthology.org/R11-1010/ 2011-09 70 76