Meilus, O.J. and Alybin, V. (1997) “Experimental Characteristics of the VTM Frequency Multiplier with the Lengthened Output Cascade”, Elektronika ir Elektrotechnika, 11(2). Available at: https://eejournal.ktu.lt/index.php/elt/article/view/15840 (Accessed: 23 January 2026).