Sarmah, Hemanta Kr. “Period Doubling Bifurcation and Feigenbaum Universality in RÖssler System”. Journal of Global Research in Mathematical Archives(JGRMA) 1, no. 9 (February 5, 2014). Accessed July 4, 2025. https://jgrma.com/index.php/jgrma/article/view/121.