Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SAGARA Setsuo and IMAI Jun,On an Approximation Model via Galerkin Method for a Parabolic Distributed Parameter System with Boundary Inputs,Transactions of the Society of Instrument and Control Engineers,04534654,The Society of Instrument and Control Engineers,1991,27,12,1366-1373,https://cir.nii.ac.jp/crid/1390282679478177536,https://doi.org/10.9746/sicetr1965.27.1366