by 복미정(Mi-Jung Bok), 서정희(Jeong-Hee Seo)
Published in 한국컴퓨터정보학회논문지 (01.04.2018)

by 성다겸, 김춘경, Seong, Da Gyeom, Kim, Choon Kyung
Published in Korean Journal of child studies (01.08.2015)

by 최해주(Hae Joo Choi), 문수백(Soo Back Moon)
Published in Korean Journal of child studies (2012)

by 유은희(Eun Hee Yoo), 임미옥(Mi Ok Lim)
Published in Korean Journal of child studies (2006)

by 조옥자, 현온강
Published in Korean Journal of child studies (01.06.2005)

by 조옥자, 현온강, Jo, Ok Ja, Hyun, On-Kang
Published in Korean Journal of child studies (2005)

by 정정순, 변상해
Published in 벤처창업연구 (2012)

by 허규형, 석정호, 최원정
Published in Singyŏng chŏngsin ŭihak (01.11.2014)