Inter-American Photochemical Society (I-APS) http://www.i-aps.org/
Glossary of terms used in Photochemistry http://iupac.org/publications/pac/79/3/0293/
Notre Dame Radiation Laboratory http://www.rad.nd.edu/rcdc/index.html
IUPAC Technical Report on Chemical Actinometry http://www.iupac.org/publications/pac/2004/pdf/7612x2105.pdf
Glossary of terms used in Physical Organic Chemistry http://www.iupac.org/publications/pac/1994/pdf/6605x1077.pdf