SamoilenkoV.G. and SamoilenkoY.I. 2013. Two-Phase Solitonlike Solutions of the Cauchy Problem for a Singularly Perturbed Korteweg-De-Vries Equation with Variable Coefficients. Ukrains’kyi Matematychnyi Zhurnal. 65, 11 (Nov. 2013), 1515–1530.