Chang Kyoo Yoo, Dong Soon Kim, <st1:PersonName w:st="on">Ji-Hoon Cho</st1:PersonName>, Sang Wook Choi and In-Beum <st1:PersonName w:st="on">Lee</st1:PersonName>, Process system engineering in the wastewater treatment process, The Korean Journal of Chemical Engineering, 18(4), 408-421, The Korean Institute of Chemical Engineers (<st1:date o:ls="trans" Year="2001" Month="7" Day="31" w:st="on">2001.07.31</st1:date>). (*Invited)