Kockanat, Serdar, Turker Koza, Nurhan Karaboga, and Ahmet Logoglu. 2018. “Adaptive FIR Filtering Using ABC Algorithm: A Noise Reduction Application on Mitral Valve Doppler Signal”. Elektronika Ir Elektrotechnika 24 (5):62-68. https://doi.org/10.5755/j01.eie.24.5.21845.