1. M. Siqueira, D. Xu, J. Gallier, L. Nonato, D. Morera, and L. Velho (2008). A New Construction of Smooth Surfaces from Triangle Meshes Using Parametric Pseudo-Manifolds.
   IEEE International Conference on Shape Modeling and Applications (SMI'09), June 26 - 28, 2009, Beijing, China (To appear in a special issue of Computers and Graphics)
2. S. Hine, F. B. Atalay, D. Xu, R. Ramaswami (2009). Quadrilateral Meshes with Bounded Minimum Angle. (Video and short paper)
   25th Annual ACM Symposium on Computational Geometry (SoCG'09), June 8 - 10, 2009, Aarhus, Denmark.
3. J. Gallier, D. Morera, L. Nonato M. Siqueira, L. Velho and D. Xu (2008). Fittng Surfaces to Polygonal Meshes using Parametric Pseudo-Manifolds.
   XXI Brazilian Symposium on Computer Graphics and Image Processing, October 12 - 15, 2008, Campo Grande, Brazil.
4. F. B. Atalay, R. Ramaswami and D. Xu (2008). Quadrilateral Meshes with Bounded Minimum Angle.
   17th International Meshing Roundtable, October 12 - 15, 2008, Pittsburgh, PA.
5. M. Siqueira, D. Xu and J. Gallier (2008). Construction of $C^k$ Surfaces from Triangular Meshes Using Parametric Pseudo-Manifolds.
   Technical report MS-CIS-08-14, April 2008, University of Pennsylvania, Philadelphia, PA.
6. D. Xu, D. Blank and D. Kumar (2008). Games, Robots, and Robotic Games: Coomplementary Contexts for Introductory Computing Education.
   Microsoft Academic Days Conference on Game Development in Computer Science Education, February 28 - March 3, 2008, Miami, FL.
7. J. Gallier and D. Xu (2003). Computing Exponentials of Skew Symmetric Matrices and Logarithms of Orthogonal Matrices.
   International Journal of Robotics and Automation, 18(1):10-20.

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