Gandzha, I. S., Sedletsky, Y. V. and Dutykh, D. S. (2014) “High-Order Nonlinear Schrödinger Equation for the Envelope of Slowly Modulated Gravity Waves on the Surface of Finite-Depth Fluid and its Quasi-Soliton Solutions”, Ukrainian Journal of Physics, 59(12), p. 1201. doi: 10.15407/ujpe59.12.1201.