by 장화(Hua Zhang), 이영화(Young-Hwa Lee), 신정아(Jung-Ah Shin), 이기택(Ki-Teak Lee), 홍순택(Soon-Teak Hong)
Published in Han'guk Sikp'um Yŏngyang Kwahakhoe chi (2013)

by 이영화(Young Hwa Lee), 지연경(Yeon Kyung Chee), 도현심(Hyun Sim Doh)
Published in Korean Journal of child studies (2012)

by 김효진(Hyo Jin Kim), 이혜진(Hye Jin Lee), 고영삼(Young Sam Go), 노경희(Kyung Hee Roh), 이영화(Young Hwa Lee), 장영석(Young
Published in Journal of plant biotechnology (30.09.2010)

by 이영화(Young-Hwa Lee), 임왕규(Wang-Kyu Lim)
Published in 한국콘텐츠학회논문지 (2011)

by 김선재(Seon-Jae Kim), 이영화(Young-Hwa Lee), 임광혁(Kwang-Hyuk Im)
Published in 한국콘텐츠학회논문지 (2010)

by 이영화(Young Hwa Lee), 장창두(Chang Doo Jang)
Published in 大韓造船學會 論文集 (2008)

by 이영화(Young Hwa Lee), 하윤석(Yun Sok Ha), 장창두(Chang Doo Jang)
Published in 大韓造船學會 論文集 (2005)