Samoilenko, V.G. and Samoilenko, Y.I. (2012) “Asymptotic m-phase soliton-type solutions of a singularly perturbed Korteweg?de Vries equation with variable coefficients”, Ukrains’kyi Matematychnyi Zhurnal, 64(7), pp. 970–87. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2632 (Accessed: 5 December 2025).