@misc{the+usefulness+of+cluster+analysis+in+the+analysis+of+data+obtained+in+the+monitoring+of+the+water+environment,
    author = {Kubala, Marek},
    title = {The usefulness of cluster analysis in the analysis of data obtained in the monitoring of the water environment},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2017},
    number = {Y. 114, vol. 12}
}