Hirokazu Yagou Yutaka Ohtake Alexander G. Belyaev Mesh Denoising via Iterative Alpha-Trimming and Nonlinear Diffusion of Normals with Automatic Thresholding. 28-33 2003 conf/cgi/2003 Computer Graphics International http://csdl.computer.org/comp/proceedings/cgi/2003/1946/00/19460028abs.htm db/conf/cgi/cgi2003.html#YagouOB03