Kurnia, R., Wahyuningrum, D., Abdassah, D. and Marhaendrajana, T. (2021) “Correlation between Phase Behavior and Interfacial Tension for Mixtures of Amphoteric and Nonionic Surfactant with Waxy Oil”, Journal of Engineering and Technological Sciences, 53(5), p. 210501. doi: 10.5614/j.eng.technol.sci.2021.53.5.1.