@misc{possibility+of+existence+of+torsional+vibrations+of+beams+in+low+frequency+range,
    author = {Augustyn, Elżbieta i Kozień, Marek S.},
    title = {Possibility of existence of torsional vibrations of beams in low frequency range},
    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. 3-M}
}