N. Subashini, A. S. M. C. D. P. G. M. S. . “Maxima (or) Minima of Independent Domination Number in Planar Graph”. Annals of the Romanian Society for Cell Biology, vol. 25, no. 6, May 2021, pp. 1132-5, https://www.annalsofrscb.ro/index.php/journal/article/view/5597.