by 최진원(Jin Won Choi)
Published in Korean Journal of child studies (2004)

by 전병주(Byeong-Joo Jeon)
Published in 한국콘텐츠학회 논문지, 12(12) (2012)

by 박선아(Sun-Ah Park), 정효미(Hyo-Mi Jeong), 차명화(Myung-Hwa Cha)
Published in 한국콘텐츠학회 논문지, 18(3) (2018)