1. EEC Council Directive 90/313/EEC (1990), On the freedom of access to information on the environment, Official Journal of the European Communities, L158, 56.
2. U.S. EPA (1985), Compilation of air pollutant emission factors, Vol.I: Stationary point and area sources, AP-42, 4th edition.
3. U.S. EPA (1986), Supplement A to compilation of air pollutant emission factors. Vol.I: Stationary point and area sources, AP-42, Supplement A.
4. U.S. EPA (1977), Revision of emission factors for petroleum refining, EPA-450/3-77-030, PB275685.
5. G. Drogaris (1988), Treatment of industrial waste waters, ELKEPA, Athens.