\input zb-basic \input zb-ioport \iteman{io-port 50215703} \itemau{Narlikar, Girija J.; Blelloch, Guy E.} \itemti{Space-efficient scheduling of nested parallelism} \itemso{ACM Trans. Program. Lang. Syst. 21, No. 1, 138-173 (1999).} \itemcc{} \itemut{} \itemli{doi:10.1145/314602.314607} \end