[[1] Poland, at: www.poland.gov.pl/, www.stat.gov.pl/gus/,ww.stat.gov.pl/gus/5216_PLK_HTML.htm.]Search in Google Scholar
[[2] www.eurometeo.com/english/climate/city_EPWA/.]Search in Google Scholar
[[3] Poland & EU25 Energy, Available: http://www.swivel.com/graphs/show/17040100?graph[scale]=range&controls=open -.]Search in Google Scholar
[[4] Energy Yearly Statistics - Polska, Eurostat, 2008,p.303-318, Available: http://epp.eurostat.ec.europa.eu/cache/ITY_OFFPUB/KS-PC-08-001/EN/KS-PC-08-001-EN.PDF.]Search in Google Scholar
[[5] http://www.mrr.gov.pl/english/Strony/default.aspx.]Search in Google Scholar
[[6] http://www.rzeszow.pl/.]Search in Google Scholar
[[7] http://www.smnowemiasto.pl/.]Search in Google Scholar
[[8] Godfrey, S., Howard, G. (2004). Water Safety Plans (WSP) for Urban Piped Water Supplies inDeveloping Countries. Loughborough University.]Search in Google Scholar