M. Rajavelan, C. Gnanavel, T. Baldwin Immanuel, and P. Muthukumar, “Improved Sensitivity of SPR Instrument Using Multiple Reflection Technique”, IJET, vol. 7, no. 2.33, pp. 1310–1312, Jun. 2018, doi: 10.14419/ijet.v7i2.33.18127.