Your search returned the following 2 documents:

2. TexToons: Practical Texture Mapping for Hand-drawn Cartoon Animations
   Daniel Sýkora, Mirela Ben-Chen, Martin Čadík, Brian Whited, and Maryann Simmons
   In: Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Non-Photorealistic Animation and Rendering (NPAR 2011), Vancouver, Canada, 2011, 75-84
   
1. Bas-Relief Meshes for Adding Global Illumination Effects to Hand-Drawn Characters
   Daniel Sýkora, Ladislav Kavan, Martin Čadík, Ondřej Jamriška, Alec Jacobson, Brian Whited, Maryann Simmons, and Olga Sorkine-Hornung
   ACM Transactions on Graphics 33 (2): 1-16, 2014