Hiroo Sekiya Satoki Oshikawa Takashi Yahagi Novel Design Procedure for Class <i>de</i> amplifier. 191-209 2008 17 Journal of Circuits, Systems, and Computers 2 http://dx.doi.org/10.1142/S0218126608004277 db/journals/jcsc/jcsc17.html#SekiyaOY08