Cyrille Damez Kirill Dmitriev Karol Myszkowski State of the Art in Global Illumination for Interactive Applications and High-quality Animations. 55-78 2003 22 Comput. Graph. Forum 1 http://diglib.eg.org/EG/CGF/volume22/issue1/cgf_646.htm db/journals/cgf/cgf22.html#DamezDM03