@misc{the+utilisation+of+zeolites+for+the+reduction+of+ammonium+concentration+in+biogas+processes,
    author = {Hajduk, Anna i Dębowski, Marcin i Zieliński, Marcin i Rusanowska, Paulina},
    title = {The utilisation of zeolites for the reduction of ammonium concentration in biogas processes},
    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. 11}
}