\input zb-basic
\input zb-ioport
\iteman{io-port 03782890}
\itemau{Dodunekov, Stefan M.}
\itemti{Quadratic residue codes.}
\itemso{Mathematics and education in mathematics, Proc. 4th Spring Conf. Bulg. Math. Soc., Pernik 1975, 146-150 (1978).}
\itemcc{}
\itemut{}
\itemli{}
\end