@misc{presence+of+contaminants+in+refrigerant+and+their+effect+on+refrigeration+cycle,
    author = {Skrzyniowska, Dorota},
    title = {Presence of contaminants in refrigerant and their effect on refrigeration cycle},
    journal = {Journal of Energy and Power Engineering},
    publisher = {David Publishing Company},
    date = {2014},
    number = {vol. 8, no. 2},
    ISSN = {1934-8975 }
}