by 박진우(Jin-Woo Park), 김동선(Dong-Sun Kim), 고민수(Min-Su Ko), 조정호(Jung-Ho Cho)
Published in Clean Technology, 20(1) (01.03.2014)

by 성민준(Minjun Seong), 이경은(Kyungeun Lee), 조정호(Jung-Ho Cho), 이영철(Young-Chul Lee), 전종기(Jong-Ki Jeon)
Published in Clean Technology, 19(1) (2013)

by 이종집(Jong Jib Lee), 조정호(Jung Ho Cho), 김흥태(Ht Kim)
Published in Daehan hwan'gyeong gonghag hoeji (2011)

by 조정호(Jung-Ho Cho), 김태은(Tae-Eun Kim), 임재환(Jae-Hwan Lim)
Published in 디지털콘텐츠학회논문지 (2003)