\input zb-basic \input zb-ioport \iteman{io-port 70707242} \itemau{Brim, Lubos; Cern\'a, Ivana; Necesal, Martin} \itemti{Randomization helps in LTL model checking} \itemso{PAPM-PROBMIV, 105-119 (2001).} \itemcc{} \itemut{} \itemli{doi:10.1007/3-540-44804-7\_7} \end