SUBRAMANIAN, DV, KPB PILLAI, and LGS IYER. “A Grey Scale Test Pattern Generator for Testing APT Recorders”. MAUSAM 37, no. 3 (July 1, 1986): 353–354. Accessed September 19, 2024. http://103.215.208.102/index.php/MAUSAM/article/view/2455.