Performance Evaluation of a Hybrid Algorithm for Collision Detection in Crowded Interactive Environments. - Rafael de Sousa Rocha; Maria Andréia F. Rodrigues; Leandro da Silva Taddeo (SIBGRAPI, 2006)

An evaluation of a collision handling system using sphere-trees for plausible rigid body animation. - Rafael de Sousa Rocha; Maria Andréia F. Rodrigues (SAC, 2008)