by 선현석(Hyunseok Sun), 이영섭(Yung-Seop Lee), 임창원(Changwon Lim)
Published in Ŭngyong tʻonggye yŏnʼgu (2021)

by 선현석, Hyunseok Sun, 임창원, Changwon Lim
Published in Ŭngyong tʻonggye yŏnʼgu (2019)

by 선현석, Hyunseok Sun, 임창원, Changwon Lim, 이영섭, Yungseop Lee
Published in Ŭngyong tʻonggye yŏnʼgu (2017)