Mukhtar, W. M., and I. Kamarolzaman. “Real Time Detection of milk’s Spoilage Using Au/GO Bend SMF Sensor Based on Localized Surface Plasmon Resonance Effect”. Journal of Mechanical Engineering and Sciences, vol. 14, no. 4, Dec. 2020, pp. 7540-5, doi:10.15282/jmes.14.4.2020.20.0594.