Motoki Katayama Hiroyuki Hase Hiroo Sekiya Jianming Lu Takashi Yahagi Design of Class DE Inverter with Second Order Constant K Band-Pass Filter. 2132-2140 2007 90-A IEICE Transactions 10 http://dx.doi.org/10.1093/ietfec/e90-a.10.2132 db/journals/ieicet/ieicet90a.html#KatayamaHSLY07