@misc{modelling+the+delivery+and+laying+of+concrete+mix,
    author = {Więckowski, Andrzej},
    title = {Modelling the delivery and laying of concrete mix},
    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. 9}
}