@misc{real+and+theoretical+energy+efficiency+of+vapour+compression+heat+pumps,
    author = {Pater, Sebastian i Ciesielczyk, Włodzimierz},
    title = {Real and theoretical energy efficiency of vapour compression heat pumps},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2017},
    number = {Y. 114, vol. 5}
}