@misc{investigations+of+strength+and+leak+tightness+of+wave+ring+gaskets,
    author = {Trojnacki, Andrzej i Szybiński, Bogdan},
    title = {Investigations of strength and leak tightness of wave-ring gaskets},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2015},
    number = {Y. 112, iss. 4-M}
}