@misc{failure+criteria+used+in+structural+optimization,
    author = {Błachut, Jan},
    title = {Failure criteria used in structural optimization},
    journal = {Czasopismo Techniczne. Mechanika},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2008},
    number = {R. 105, Z. 5, 4-M}
}