A Study on Comparisons between Sine–Gordon & Perturbed NLS Equations: Comparative Analysis of Sine-Gordon and Perturbed NLS Equations in 2D Dispersive Optical Media. JASRAE [Internet]. 2018 Apr. 1 [cited 2025 Jun. 27];15(1):582-5. Available from: https://ignited.in/index.php/jasrae/article/view/7674