“Densities, Refractive Indices and Excess Properties for the binary mixtures of 2-Hydroxyethanaminium formate [HEF] with monoethanolamine (MEA) at T = 293.15 to 313.15 K”., JPIChE, vol. 42, no. 1, pp. 13–22, Jul. 2014, Accessed: Aug. 12, 2026. Available: https://www.piche.org.pk/journal/index.php/jpiche/article/view/149