Brito, Leonardo, and Paulo Henrique de Carvalho. “Simulation of RF Analog Circuits: A Systematic Exposition of the Harmonic Balance and Complex Envelope Methods”. Journal of Communication and Information Systems 19, no. 1 (March 2, 2017). Accessed October 17, 2019. https://jcis.sbrt.org.br/jcis/article/view/442.