RAMACHANDRAN, S. “A Technique Employing Frequency Shift Keying (FSK) Method for Tracking F-Type Rawinsondes”. MAUSAM 9, no. 1 (January 1, 1958): 63–66. Accessed November 13, 2024. http://103.215.208.102/index.php/MAUSAM/article/view/4697.