Regulations are the tool for evaluating philatelic literature in exhibitions and competitions. The biggest international philatelic organizations maintain their own regulations, namely
Fédération Internationale de Philatélie (FIP) regulations can be found here.
FEPA – Federation of European Philatelic Associations regulations can be found here.
Many of the national philatelic federations have translated the regulations into their own languages. These can be found from their own websites. For example: