@misc{application+of+renewable+energy+sources+in+central+heat+supply+systems,
    author = {Vranay, Frantisek i Vranayova, Zuzana i Lukasik, Dusan},
    title = {Application of renewable energy sources in central heat supply systems},
    journal = {Czasopismo Techniczne. Budownictwo},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2010},
    number = {R. 107, Z. 4, 2-B}
}