\input zb-basic
\input zb-ioport
\iteman{io-port 50026413}
\itemau{B\"ohme, Thomas; Mohar, Bojan; Thomassen, Carsten}
\itemti{Long cycles in graphs on a fixed surface}
\itemso{J. Comb. Theory, Ser. B 85, No. 2, 338-347 (2002).}
\itemcc{}
\itemut{}
\itemli{doi:10.1006/jctb.2001.2108}
\end