Vasantha, M, et al. “A Study on Pseudo Symmetric 𝚪-Ideals in Ternary 𝚪-Semigroups”. International Journal of Engineering & Technology, vol. 7, no. 3.31, Aug. 2018, pp. 153-6, https://doi.org/10.14419/ijet.v7i3.31.18286.