Sharma, S. C., L. K. Shrestha, and K. Aramaki. “Foam Stability Study of Dilute Aqueous Nonionic Fluorinated Surfactant Systems”. Journal of Nepal Chemical Society 22 (June 20, 2007): 47–54. Accessed June 17, 2024. https://nepjol.info/index.php/JNCS/article/view/522.