@inproceedings{RR99, author = {Rauber, T. and R\"{u}nger, G.}, title = {{Matrix Computations behind the Hierarchical Radiosity method}}, booktitle = {Proc. of the 13th Annual ACM Symp. on Applied Computing (SAC`99), Special Track on Scientific Computing}, year = {1999}, isbn = {1-58113-086-4}, publisher = {ACM}, }