1. Barron RF Cryogenic systems, 2nd edn. Critical components of liquefaction systems, heat exchanger, p 109, Cryogenic refrigeration systems; Ideal refrigeration systems, p 237
2. Google Patent, Method and system for liquefying natural gas using single mixed refrigerant and refrigeration medium
3. Handbook of research on advances and applications in refrigeration systems and technologies, chap 3. Tatiana Morosuk/George Tsatsaronis, Technische University, Germany
4. How To… specify a heat exchanger, https://www.hrs-heatexchangers.com/news/specify-heat-exchanger/
5. Logarithmic mean temperature difference in mechanical engineering. http://mechanicalinventions.blogspot.com/2016/12/log-mean-temperature-difference-lmtd.html