Schirmacher, H., Heidrich, W., Rubick, M., Schiron, D., & Seidel, H.-P. (1999). Image-Based BRDF Reconstruction. In B., Girod, H., Niemann, & H.-P., Seidel (Eds.), Proceedings of the 4th Conference on Vision, Modeling, and Visualization (VMV-99) (pp. 285-292). Sankt Augustin, Germany: Infix.