@ARTICLE{Kołodziejczyk_Danuta_The_2013,
 author={Kołodziejczyk, Danuta},
 number={vol. 36},
 journal={Studia Regionalia},
 howpublished={online},
 year={2013},
 publisher={Polish Academy of Sciences – Committee for Spatial Economy and Regional Planning and European Regional Science Association (ERSA) Polish Section},
 title={The Spatial Diversity of Water Supply and Sewer Systems in Polish Rural Areas in the 1995-2010 Period},
 URL={http://www.czasopisma.pan.pl/Content/98145/mainfile.pdf},
}