Jumarie, G. “Oscillation of Non-Linear Systems Close to Equilibrium Position in the Presence of Coarse-Graining in Time and Space”. Nonlinear Analysis: Modelling and Control 14, no. 2 (April 25, 2009): 177–197. Accessed July 7, 2024. https://www.journals.vu.lt/nonlinear-analysis/article/view/14520.