by 김용구(Yong-Ku Kim), 신철민(Cheolmin Shin)
Published in Singyŏng chŏngsin ŭihak (31.05.2018)

by 김용구, Yong Ku Kim
Published in Ŭngyong tʻonggye yŏnʼgu (2015)

by 김남희, Nam Hee Kim, 김용구, Yong Ku Kim
Published in Ŭngyong tʻonggye yŏnʼgu (2016)

by 곽민정(Min Jung Kwak), 김용구(Yong Ku Kim)
Published in Ŭngyong tʻonggye yŏnʼgu (2014)

by 오건웅(Gunung Oh), 박서윤(Seo Yoon Park), 이재구(Jae-Goo Lee), 김용구(Yong Ku Kim), 라호원(Ho Won Ra), 서명원(Myung Won Seo), 윤상준(Sang Jun Yoon)
Published in Clean Technology, 22(1) (01.03.2016)

by 이정진, Jeong Jin Lee, 김남희, Nam Hee Kim, 권혜지, Hye Ji Kwon, 김용구, Yong Ku Kim
Published in Ŭngyong tʻonggye yŏnʼgu (2014)

by 김현정, Hyeon Jeong Kim, 도해영, Hae Young Do, 김용구, Yong Ku Kim
Published in Ŭngyong tʻonggye yŏnʼgu (2013)