@misc{optimising+energy+produced+by+photovoltaic+cells,
    author = {Gałek, Paweł},
    title = {Optimising energy produced by photovoltaic cells},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2014},
    number = {Y. 111, iss. 3-B}
}