by Bak, Kwan-Young, Kim, Kwang-Rae, Kim, Peter T., Koo, Ja-Yong, Park, Changyi, Zhu, Hongtu
Published in Journal of the Korean Statistical Society (01.09.2021)

by 김민선, Min Sun Kim, 최호식, Hosik Choi, 박창이, Changyi Park
Published in Ŭngyong tʻonggye yŏnʼgu (2015)

by 김광수, Kwang Su Kim, 박창이, Chang Yi Park
Published in Ŭngyong tʻonggye yŏnʼgu (2013)