Ivan, Mircea. “Sur Les Surfaces Du Type Bernstein-Bézier composées: On the Compounded Bernstein-Bézier Type Surfaces”. Anal. Numér. Théor. Approx. 15, no. 2 (August 1, 1986): 127–130. Accessed May 3, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1986-vol15-no2-art5.