\input zb-basic \input zb-ioport \iteman{io-port 50030225} \itemau{Karp, Richard M.; Nierhoff, Till; Tantau, Till} \itemti{Optimal flow distribution among multiple channels with unknown capacities} \itemso{Electronic Notes in Discrete Mathematics 19, 225-231 (2005).} \itemcc{} \itemut{} \itemli{doi:10.1016/j.endm.2005.05.031} \end