WASET
    Sameh Frikha and  Mohamed Salah Abid,  Production of Ultra-Low Temperature by the Vapor Compression Refrigeration Cycles with Environment Friendly Working Fluids.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 109(1). 86 - 90
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10003543.