\input zb-basic \input zb-ioport \iteman{io-port 70391474} \itemau{Jolly, Simon; Parashkevov, Atanas N.; Mcdougall, Tim} \itemti{Automated equivalence checking of switch level circuits} \itemso{DAC, 299-304 (2002).} \itemcc{} \itemut{} \itemli{doi:10.1145/513918.513996} \end