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      Nonlinear Beam Propagation in a Class of Complex Non-PT -Symmetric Potentials 

      Cuevas-Maraver, Jesús; Kevrekidis, Panayotis G.; Frantzeskakis, Dimitri J.; Kominis, Yannis (Springer Nature Singapure, 2018)
      The subject of PT -symmetry and its areas of application have been blossoming over the past decade. Here, we consider a ...
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      Sine-Gordon Equation: From Discrete to Continuum 

      Chirilus-Bruckner, Martina; Chong, Christopher; Kevrekidis, Panayotis G.; Cuevas-Maraver, Jesús (Springer International Publishing, 2014)
      In the present Chapter, we consider two prototypical Klein-Gordon models: the integrable sine- Gordon equation and the ...