\input zb-basic
\input zb-ioport
\iteman{io-port 06119682}
\itemau{Floater, Michael S.}
\itemti{The loss of H\"older regularity of four-point interpolatory subdivision on irregularly spaced points.}
\itemso{Jaen J. Approx. 3, No. 2, 261-270 (2011).}
\itemcc{}
\itemut{}
\itemli{}
\end