Prariyada Theptat and Sumaeth Chavadej and John F. Scamehorn, A Comparison of Conventional and Biodegradable Chelating Agent in Different Type of Surfactant Solutions for Soap Scum Removal. journal = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology. April 2013, vol. 76(4). 215 - 218 [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/12905.