@misc{the+influence+of+polypropylene+fibres+on+the+properties+of+fresh+and+hardened+concrete,
    author = {Chajec, Adrian i Krzywiński, Kamil i Ostrowski, Krzysztof i Sadowski, Łukasz},
    title = {The influence of polypropylene fibres on the properties of fresh and hardened concrete},
    journal = {Technical Transactions },
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2019},
    number = {Vol. 116, iss. 5},
    ISSN = {0011-4561}
}