@misc{statistical+research+of+steel+grades+dx51d+dx52d+and+dx53d,
    author = {Żwirek, Paweł},
    title = {Statistical research of steel grades: DX51D, DX52D and DX53D},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2014},
    number = {Y. 111, iss. 4-B}
}