1. Minimal requirements for the microclimate at workplaces, Ordinance RD-07-3 of 18 July 2014,0
2. EU air quality standards,0
3. European Parliament and of the Council;Directive 2008/50/EC the of 21 May 2008 on ambient air quality and cleaner air for Europe,0
4. European Parliament and of the Council, Directive 2004/107/EC the of 15 December 2004 relating to arsenic, cadmium, mercury, nickel and polycyclic aromatic hydrocarbons in ambient air,0