Kasprzak, A., Motyka, J., & Wardas-Lasoń, M. (2013). Changes in the chemical composition of groundwater in Quaternary aquifer in Old Krakow, Poland (years 2002-2012). Geology, Geophysics and Environment, 39(2), 143. https://doi.org/10.7494/geol.2013.39.2.143