Sotner, R., J. Jerabek, B. Sevcik, T. Dostal, and K. Vrba. “Novel Solution of Notch All-Pass Filter With Special Electronic Adjusting of Attenuation in the Stop Band”. Elektronika ir Elektrotechnika 113, no. 7 (September 5, 2011): 37–42. Accessed February 8, 2026. https://eejournal.ktu.lt/index.php/elt/article/view/609.