1. Bulletin of Power Industry (Sytuacja w elektroenergetyce). Quarterly bulletin, fourth quarter 2006, published by The Energy Market Agency (Agencja Rynku Energii S.A.), Warszawa; 2007. See also: 〈http://www.are.waw.pl〉 (in Polish).
2. Emitor 1997; 1998; 2000; 2001; 2002; 2003; 2004; 2005. The emission of environmental pollution in power plants and in combined heat and power plants (Emisja Zanieczyszczeń Środowiska w Elektrowniach i Elektrociepłowniach Zawodowych). Warsaw, Published by The Energy Market Agency (Agencja Rynku Energii S.A.), 1999; 2001; 2002; 2003; 2004; 2005; 2006. See also: 〈http://www.are.waw.pl〉 (in Polish).
3. Directive 2001/77/EC of the European Parliament and Council of 27 September 2001 on the promotion of electricity produced from renewable energy sources in the internal electricity market. Official Journal L283, 27/10/2001 P.0033–0040. Available on: 〈http://europa.eu.int/eur-lex/pri/en/oj/dat/2001/l_283/l_28320011027 n00330040.pdf〉.
4. The official announcement of the Minister of Economy and Labour in the matter of a report publication describing the aims within the scope of electric power share generated from the renewable sources located in the Republic of Poland, in the national electric power consumption over the period 2005–2014 (Obwieszczenie Ministra Gospodarki i Pracy z dnia 31 sierpnia 2005 r. w sprawie ogłoszenia raportu określającego cele w zakresie udziąu energii elektrycznej wytwarzanej w odnawialnych źródłach energii znajdujących się na terytorium Rzeczpospolitej Polskiej, w krajowym zużyciu energii elektrycznej w latach 2005–2014). Published in Monitor Polski nr 53, poz. 730 i 731, 2005. Available (in Polish) on: 〈http://isip.sejm.gov.pl/prawo/index.html〉.
5. Integrated pollution prevention and control reference document. Reference document on the best available techniques for large combustion plants. European Commission. July 2006. Available on: 〈http://eippcb.jrc.es/pages/FEvents.htm〉.