@misc{invasive+species+and+their+role+in+historic+park+sites,
    author = {Czerniakowski, Zbigniew W. i Olbrycht, Tomasz},
    title = {Invasive species and their role in historic park sites},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2015},
    number = {Y. 112, iss. 5-A}
}