(1) Masaaki OKUBO, Takuya KUWAHARA, Keiichiro YOSHIDA, Hidekatsu FUJISHIMA and Tomoyuki KUROKI, "Super-Clean Diesel Engine and Combustor Using Nonthermal Plasma Hybrid Aftertreatment", Journal of HTSJ, Vol.51 , No.216, The Heat Transfer Society of Japan (HTSJ), pp.55-63, July 2012 (in Japanese).

(2) Takuya KUWAHARA, Tomoyuki KUROKI, Keiichiro YOSHIDA, Kenichi HANAMOTO, Kazutoshi SATO and Masaaki OKUBO, "Development of Super Clean Marine Diesel Engine Using Plasma-Hybrid Aftertreatment of Exhaust Gas", Journal of the Japan Institute of Marine Engineering, Vo.48, No.4, The Japan Institute of Marine Engineering (Japan), pp.117 -122, July 2013 (in Japanese).