During this project several organisations with great expertise in the field of particulate matter are consulted, the most important are

VMM (Flemmish Environmental Association, Belgium)
AWAC (Walloon Agency for Air and Climate, Belgium)
IRCEL-CELINE (Interregional Cell for Environment, Belgium)
LANUV NRW (State Agency for Nature, Environment and Consumer Protection of North Rhine-Wesfalen, Germany)
RIVM (National Institute for Public Health and the Environment, The Netherlands)
GGD (Public Health Service Amsterdam, The Netherlands)

Other interesting sites:

European Union (EU)
Project Air Pollution Monitoring Technologies (AirMonTech)