SamoilenkoV. G., and SamoilenkoYu. I. “Asymptotic Solutions of the Cauchy Problem for the Singularly Perturbed Korteweg-De Vries Equation With Variable Coefficients”. Ukrains’kyi Matematychnyi Zhurnal 59, no. 1 (January 25, 2007): 122–132. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3295.