@misc{influence+of+refrigerant+r1234yf+as+a+substitute+for+r134a+on+a+perfect+refrigeration+cycle+and+exchanger+efficiency,
    author = {Kopeć, Piotr},
    title = {Influence of refrigerant R1234yf as a substitute for R134a on a perfect refrigeration cycle and exchanger efficiency},
    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. 1-M}
}