Jerabek, J., Sotner, R., Dostal, T. and Vrba, K. 2015. Simple Resistor-less Generator Utilizing Z-copy Controlled Gain Voltage Differencing Current Conveyor for PWM Generation. Elektronika ir Elektrotechnika. 21, 5 (Oct. 2015), 28-34. DOI:https://doi.org/10.5755/j01.eee.21.5.13322.