V.Gnanalakshmi, R.S.Yohin, Arunvenkat BNV. “Cryptography in Optical Network Using Secrecy Scheme”. Annals of the Romanian Society for Cell Biology, vol. 25, no. 6, July 2021, pp. 17270-83, http://www.annalsofrscb.ro/index.php/journal/article/view/9015.