\input zb-basic \input zb-ioport \iteman{io-port 03750179} \itemau{Rokne, J.} \itemti{The centered form for interval polynomials.} \itemso{Computing 27, 339-348 (1981).} \itemcc{} \itemut{centered form; interval polynomials; range of values; numerical results; Horner scheme} \itemli{doi:10.1007/BF02277183} \end