@article{ijtech-1609,
				title={Optimization of the Friction Factor and Frictional Pressure Drop of R22 and R290},
				author={Normah  Ghazali,Qais Abid  Yousif,Agus S.  Pamitran,Sentot  Novianto,Robiah  Ahmad},
				volume={7},
				number={2},
				year={2016},
				month={Feb},
				pages={227-234},
				DOI={https://doi.org/10.14716/ijtech.v7i2.2989},
				journal={International Journal of Technology},
				ISSN={2087-2100}}