Myszkowski, Karol Computer Graphics, MPI for Informatics, Max Planck Society;
Myszkowski, K., & Kunii, T. L. (2000). A Case Study Towards Validation of Global Illumination Algorithms: Progressive Hierarchical Radiosity with Clustering. The Visual Computer, 16(5), 271-288. Retrieved from http://link.springer.de/link/service/journals/00371/bibs/0016005/00160271.htm.