Ritschel, Tobias Computer Graphics, MPI for Informatics, Max Planck Society; International Max Planck Research School, MPI for Informatics, Max Planck Society;
http://scidok.sulb.uni-saarland.de/volltexte/2010/3153/ (Any fulltext)
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Ritschel, T. (2009). Perceptually-motivated, Interactive Rendering and Editing of Global Illumination. PhD Thesis, Universität des Saarlandes, Saarbrücken. doi:10.22028/D291-25974.