@misc{technical+transactions+iss+21+civil+engineering+iss+6+b,
    title = {Technical Transactions iss. 21. Civil Engineering iss. 6-B},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2014}
}