@misc{comparison+of+selected+methods+of+industrial+magnesium+sulphate+purification+from+iron+compounds,
    author = {Jarosiński, Andrzej i Radomski, Piotr},
    title = {Comparison of selected methods of industrial magnesium sulphate purification from iron compounds},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2011}
}