A Rule-Based Optimizer for Spatial Join Algorithms
Fornari, M. Iochpe, C & J. Comba 
Geo INFO 2006 - VIII Brazilian Symposium on Geonfinformatics

GPU-based Tiled Ray Casting using Depth Peeling
Bernardon, F.F.; Comba, J.L.D.; Pagot, C.A. & Silva, C.T.
Journal of Graphics Tools, 2006, 11.3, 23-29

Query Optimizer for Spatial Join Operations
Fornari, M. Iochpe, C & J. Comba
ACM-GIS'06 ACM International Symposium on Advances in Geographics Information Systems, 2006, Pages 219-226. ISBN:1-59593-529-0 

Interactive Volume Rendering of Unstructured Grids with Time-Varying Scalar Fields
Bernardon, F.; Callahan, S.; Comba, J. & Silva, C. 
Eurographics Symposium on Parallel Graphics and Visualization, 2006, 51-58

Erasing, Digging and Clipping in Volumetric Datasets with One or Two Hands
Huff, R.; Dietrich, C.A.; Nedel, L.P.; Freitas, C.M.D.S. & Olabarriaga, S.D.
VRCIA 2006 (ACM International Conference on Virtual Reality Continuum and Its Applications), 2006, 271-278

Multi-Fragment Effects on the GPU using the k-Buffer
L. Bavoil, S.P. Callahan, A. Lefohn, J.L.D. Comba, C.T. Silva
SCI Institute Technical Report UUSCI-2006-032.  University Of Utah, 2006.