by Lee, Sanghyuck, Ra, Choon Sup
Published in 청정기술 (2016)

by Kim, Jin Won, Cho, Dae Won, Park, Gyoosoon, Kim, Sung Hong, Ra, Choon Sup
Published in Bulletin of the Korean Chemical Society (2013)

by Ra, Choon-Sup, Yoon, Dong-Ho, Park, Gyoo-Soon
Published in Bulletin of the Korean Chemical Society (2011)

by 박민균, 심재진, 나춘섭, Park, Min Kyun, Shim, Jae Jin, Ra, Choon Sup
Published in Clean Technology, 21(2) (01.06.2015)

by Park, Gyoo-Soon, Park, Eun-Mook, Ra, Choon-Sup
Published in Bulletin of the Korean Chemical Society (2010)

by Ra, CS, Jung, BY, Park, G
Published in Heterocycles (01.01.2004)

by Ra, Choon-Sup, Park, Eun-Mook, Park, Gyoo-Soon
Published in Bulletin of the Korean Chemical Society (2008)

by Ra, Choon-Sup, Yim, Sang-Gyu, Park, Gyoo-Soon
Published in Bulletin of the Korean Chemical Society (2008)

by 김진원(Jin Won Kim), 박민균(Min Kyun Park), 심재진(Jae Jin Shim), 나춘섭(Choon Sup Ra)
Published in Clean Technology, 20(2) (2014)

by Shim, Jae-Jin, Kim, Duck, Ra, Choon-Sup
Published in Bulletin of the Korean Chemical Society (2006)

by Ra, Choon-Sup, Hwang, Jang-Cheol, Lee, Hong-Bum, Shim, Jae-Jin
Published in Bulletin of the Korean Chemical Society (2007)

by Jung, Woo-Sik, Ra, Choon-Sup, Min, Bong-Ki
Published in Bulletin of the Korean Chemical Society (2005)

by Jung, Woo-Sik, Ra, Choon-Sup, Min, Bong-Ki
Published in Bulletin of the Korean Chemical Society (2005)

by Ra, Choon-Sup, Park, Gyoo-Soon
Published in Bulletin of the Korean Chemical Society (01.10.2004)

by Lim, Bang-Hyun, Choe, Woo-Hyuk, Shim, Jae-Jin, Ra, Choon Sup, Tuma, Dirk, Lee, Heun, Lee, Chul Soo
Published in The Korean journal of chemical engineering (01.07.2009)

by Park, Gyoo-Soon, Jung, Woo-Sik, Ra, Choon-Sup
Published in Bulletin of the Korean Chemical Society (2004)

by Ra, Choon-Sup, Park, Gyoo-Soon
Published in Bulletin of the Korean Chemical Society (2002)

by Ra, Choon-Sup, Yoon, Dong-Ho, Park, Gyoo-Soon
Published in Bulletin of the Korean Chemical Society (20.08.2011)

by Park, Gyoo-Soon, Ra, Choon-Sup
Published in Bulletin of the Korean Chemical Society (01.08.2003)

by Park, Gyoo-Soon, Hwang, Jang-Cheol, Jung, Woo-Sik, Ra, Choon-Sup
Published in Bulletin of the Korean Chemical Society (2005)