\input zb-basic \input zb-ioport \iteman{io-port 06030948} \itemau{Kotrb\v{c}{\'\i}k, Michal} \itemti{A note on disjoint cycles.} \itemso{Inf. Process. Lett. 112, No. 4, 135-137 (2012).} \itemab Summary: We prove tight polynomial-time computable lower and upper bounds on the maximum number of vertex-disjoint cycles of a given graph in terms of its cycle rank and maximum genus. \itemrv{~} \itemcc{} \itemut{combinatorial problems; vertex-disjoint cycles; maximum genus} \itemli{doi:10.1016/j.ipl.2011.11.006} \end