@article{ijtech-1238,
				title={Characteristics and COP Cascade Refrigeration System using Hydrocarbon Refrigerant (Propane, Ethane and CO2) at Low Temperature Circuit (LTC)},
				author={M. Idrus  Alhamid,Nasruddin ,Darwin  R.B.S,Arnas  Lubis},
				volume={4},
				number={2},
				year={2014},
				month={Jan},
				pages={112-120},
				DOI={https://doi.org/10.14716/ijtech.v4i2.125},
				journal={International Journal of Technology},
				ISSN={2087-2100}}