Sotner, R., Petrzela, J., Jerabek, J. and Dostal, T. (2015) “Reconnection-less OTA-based Biquad Filter with Electronically Reconfigurable Transfers”, Elektronika ir Elektrotechnika, 21(3), pp. 33-37. doi: 10.5755/j01.eee.21.3.10205.