LEE, JT LEE, SD KWON, YS PARK, S 2024-01-21T22:31:48Z 2024-01-21T22:31:48Z 2022-01-11 1993-06 0001-1541 https://pubs.kist.re.kr/handle/201004/146032 English AMER INST CHEMICAL ENGINEERS RELAY FEEDBACK METHOD FOR TUNING OF NONLINEAR PH CONTROL-SYSTEMS Article 10.1002/aic.690390619 1 AICHE JOURNAL, v.39, no.6, pp.1093 - 1096 AICHE JOURNAL 39 6 1093 1096 N scie scopus A1993LF90900018 2-s2.0-84987439743 Engineering, Chemical Engineering Note