Adhikari, S.K. “Comparative Study of Harmonics to Noise Ratio of Closed Organ Pipe at First and Second Resonance”. BMC Journal of Scientific Research 5, no. 1 (December 31, 2022): 106–110. Accessed December 26, 2024. https://nepjol.info./index.php/bmcjsr/article/view/50681.