Wang , MengyunJi , Ye and Zhu , Chungang. (2024). Degree Elevation and Knot Insertion for Generalized Bézier Surfaces and Their Application to Isogeometric Analysis.
            <i>Journal of Computational Mathematics</i>. <i>42</i> (5).
            1197-1225.
         doi:10.4208/jcm.2301-m2022-0116