Kareem, S. H., and B. Sattar. “Adsorption Properties for Aqueous Solution of Binary Mixture of Cocamidopropyl Betaine- Sodiumdodecyl Sulfate Surfactants on Air-Liquid Interface”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 24, no. 3, Sept. 2015, pp. 50-58, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/4642.