by 지형진(Hyeong-Jin Jee), 심창기(Chang-Ki Shim), 류경열(Kyung-Yul Ryu), 신현동(Hyeon-Dong Shin)
Published in Sigmulbyeong yeon'gu (2006)

by 지형진(Hyeong-Jin Jee), 류경열(Kyung-Yul Ryu), 박종호(Jong-Ho Park), 최두회(Du-Hoe Choi), 류갑희(Gab-Hee Ryu), 류재기(Jae-Gee Ryu), 신순선(Shun-Shan Shen)
Published in Sigmulbyeong yeon'gu (2008)

by 이지현(Ji-Hyun Lee), 신순선(Shun-Shan Shen), 박용주(Yong-Ju Park), 류경열(Kyung-Yul Ryu), 지형진(Hyeong-Jin Jee)
Published in Sigmulbyeong yeon'gu (2007)