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\iteman{io-port 00986003}
\itemau{Sederberg, Thomas W.}
\itemti{Point and tangent computation of tensor product rational B\'ezier surfaces.}
\itemso{Comput. Aided Geom. Des. 12, No.1, 103-106 (1995).}
\itemab
Summary: This note presents an \text{O}$(n^{2})$ algorithm for evaluating point and tangents of a rational tensor product B\'ezier surface patch.
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\itemli{doi:10.1016/0167-8396(94)00029-R}
\end