e/Biharmonic Bezier surface

Information
has gloss	eng: A Biharmonic Bézier surface is a smooth polynomial surface which conforms to the biharmonic equation and has the same formulations as a Bézier surface. This formulation for Bézier surfaces was developed by Juan Monterde and Hassan Ugail. In order to generate a biharmonic Bézier surface four boundary conditions defined by Bézier control points are usually required.
lexicalization	eng: Biharmonic Bezier surface
lexicalization	eng: Biharmonic Bézier surface
instance of	c/Elliptic partial differential equations