Karapenev, Boyan. “Design and Performance Analysis of a Twin T-Bridge RC Harmonic Oscillation Generator With an Operational Amplifier”. Indonesian Journal of Electrical Engineering and Informatics (IJEEI) 7, no. 2 (May 22, 2019): 338–344. Accessed October 29, 2026. https://section.iaesonline.com/index.php/IJEEI/article/view/694.