1. Commission of the European Communities, The Technical and Economic Aspects of Measures to Reduce Water Pollution Caused by the Discharges from the Pulp and Paper Industry, Office for Official publications of the European Communities, Luxembourg, 1993.
2. Commission of the European Communities, Techno-Economic Study on the Reduction Measures, Based on Best Available Techniques of Emissions (Water, Wastes, Air) from the Paper and Board Manufacturing Industry, Office for Official publications of the European Communities, Luxembourg, 1996.
3. Friends of the Heart Home page, The Environmental Consequences of Pulp and Paper Manufacture Briefing Sheet, http://www.foe.co.uk/pubsinfo/briefings/html, accessed January 2000.
4. Optimized design of wastewater treatment systems: Application to the mechanical pulp and paper industry: I. Design and cost relationships
5. US Environmental Protection Agency, Industry Sector Notebook: Profile of the Pulp and Paper Industry, EPA/310-R-95-015, Washington, DC, 1995.