\input zb-basic
\input zb-ioport
\iteman{io-port 03508536}
\itemau{Hill, Anthony; Singmaster, David}
\itemti{Labelled and unlabelled Hamiltonian circuits in a class of 3-polytopes.}
\itemso{Proc. 5th Br. comb. Conf., Aberdeen 1975, 293-305 (1976).}
\itemcc{}
\itemut{}
\itemli{}
\end