S. Vallipriyatharsini, A. Z. Bazeera, V. Chinnathambi, and S. Rajasekar, “HOMOCLINIC TRANSITION TO CHAOS IN THE DUFFING OSCILLATOR DRIVEN BY PERIODIC PIECEWISE LINEAR FORCES”, J. Nonlinear Anal. Optim., vol. 13, no. 1, pp. 25–38, Apr. 2022.