Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TANUMA Masaya,Optimal Feedback Control for Water Quality in an Activated Sludge Process,Transactions of the Society of Instrument and Control Engineers,04534654,The Society of Instrument and Control Engineers,1979,15,1,117-124,https://cir.nii.ac.jp/crid/1390282679481520512,https://doi.org/10.9746/sicetr1965.15.117