Siriphot, David, Nattapon Pookrongtong, and Wisit Lumchanao. “Single CDCTA Based Electronically Adjustable Current-mode Quadrature Sinusoidal Oscillator”. Applied Science and Engineering Progress 11, no. 3 (August 3, 2018): 209–216. accessed September 17, 2026. https://ph02.tci-thaijo.org/index.php/ijast/article/view/211343.