1. A. Bernhardt, A. Pihuit, M.-P. Cani, L. Barthe, Matisse: painting 2D regions for modeling free-form shapes, in: EUROGRAPHICS Workshop on Sketch-Based Interfaces and Modeling, 2008, pp. 57–64.
2. A generalization of algebraic surface drawing;Blinn;ACM Transactions on Graphics,1982
3. Convolution surfaces;Bloomenthal;Computer Graphics,1991
4. Prototype modeling from sketched silhouettes based on convolution surfaces;Tai;Computer Graphics Forum,2004
5. Subdivision curve primitives: a new solution for interactive implicit modeling;Cani,2001