Kazmi, M., Yasir, F., Habib, S., Hayat, M.S. and Qazi, S.A. 2021. Photometric Ligature Extraction Technique for Urdu Optical Character Recognition. Engineering, Technology & Applied Science Research. 11, 6 (Dec. 2021), 7968–7973. DOI:https://doi.org/10.48084/etasr.4596.