Robert L. Cook (1984) Distributed ray tracing. SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques, Pages 137 - 145
doi.org
IMMEL, David S.; COHEN, Michael F.; GREENBERG, Donald P. A radiosity method for non-diffuse environments. Siggraph 1986. 1986, s. 133. ISBN0-89791-196-2. doi:10.1145/15922.15901.Je zde použita šablona {{Citation}} označená jako k „pouze dočasnému použití“.