Kink-antikink interaction forces and bound states in a nonlinear Schrödinger model with quadratic and quartic dispersion. - G. A. Tsolias; Robert J. Decker; Aslihan Demirkaya; Tristram J. Alexander; Ross Parker; P. G. Kevrekidis (Commun. Nonlinear Sci. Numer. Simul., 2023)