by 김현재(Hyun-Jae Kim), 이정환(Jeong-Hwan Lee)
Published in 한국정보통신학회논문지 (2023)

by 김상수(Sang-Su Kim), 이정환(Jeong Hwan Lee)
Published in The Journal of Asian finance, economics, and business (30.11.2016)

by 전성천(Seong-Chun Jun), 방성현(Sung-Hyun Bang), 이창영(Chang-Young Lee), 이명재(Myeong-Jae Yi), 이정환(Jeong-Hwan Lee)
Published in 지질학회지 (01.04.2017)

by 이정환(Jeong-Hwan Lee)
Published in 멀티미디어학회논문지 (2012)

by 이종석(Jong-Seok Lee), 이정환(Jeong-Hwan Lee), 권기연(Ki-Youn Kwon)
Published in 한국CDE학회 논문집 (2023)

by 이정환(Jeong Hwan Lee)
Published in Korean journal of breeding (30.06.2019)

by 안병주, Beyung-ju Ahn, 박혜미, Hye-mi Park, 김주연, Joo-yeon Kim, 이정환, Jeong-hwan Lee
Published in 한국방사선학회 논문지 (30.10.2020)

by 최미순(Mi Soon Choi), 이정환(Jeong Hwan Lee), 석정희(Jung-Hee Suk), 노태문(Tae Moon Roh), 심재창(Jaechang Shim)
Published in 멀티미디어학회논문지 (2010)

by 이정환(Jeong Hwan Lee), 최대철(Dae Cheol Choi), 김홍석(Hong Seok Kim)
Published in 한국생산제조학회지 (2018)