@misc{the+future+of+the+light+sources,
    author = {Majka, Marcin i Majka, Tomasz M.},
    title = {The future of the light sources},
    journal = {Czasopismo Techniczne. Mechanika},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2012},
    number = {R. 109, Z. 26, 9-M}
}