“Stability of Exact Solutions of the Cubic-Quintic Nonlinear Schrödinger Equation With Periodic Potential”. Neliniini Kolyvannya 13, no. 4 (December 29, 2010): 533–545. Accessed January 21, 2026. https://twinhead.imath.kiev.ua/index.php/nosc/article/view/582.