Nguyen, B., Dao, T. and Nguyen, T. (2013) “Feasibility study of the replacement of refrigerants R22 & R12 by using environmentally friendly refrigerants R404A, R290 & R600A”, Science and Technology Development Journal, 16(4), pp. 60-67. doi: https://doi.org/10.32508/stdj.v16i4.1585.