\input zb-basic \input zb-ioport \iteman{io-port 70561820} \itemau{Aoto, Takahito; Toyama, Yoshihito} \itemti{A reduction-preserving completion for proving confluence of non-terminating term rewriting systems} \itemso{RTA, 91-106 (2011).} \itemcc{} \itemut{} \itemli{doi:10.4230/LIPIcs.RTA.2011.91} \end