1. Hamiltonian Aspects of Three-Layer Stratified Fluids

   • R. Camassa
   • G. Falqui
   • T. T. Vu Ho

   OriginalPaper Open access 16 June 2021 Article: 70

   

2. Travelling Waves for the Brio System

   • C.O.R. Sarrico

   OriginalPaper 08 June 2021 Article: 69

3. Ejection–Collision Orbits in Two Degrees of Freedom Problems in Celestial Mechanics

   • M. Alvarez-Ramírez
   • E. Barrabés
   • M. Ollé

   OriginalPaper 04 June 2021 Article: 68

   

4. Doubly Localized Two-Dimensional Rogue Waves in the Davey–Stewartson I Equation

   • Jiguang Rao
   • Athanassios S. Fokas
   • Jingsong He

   OriginalPaper 31 May 2021 Article: 67

   

5. A Family of Semitoric Systems with Four Focus–Focus Singularities and Two Double Pinched Tori

   • Annelies De Meulenaere
   • Sonja Hohloch

   OriginalPaper Open access 29 May 2021 Article: 66

   

6. Hopf-Like Bifurcations and Asymptotic Stability in a Class of 3D Piecewise Linear Systems with Applications

   • Rony Cristiano
   • Durval J. Tonon
   • Mariana Q. Velter

   OriginalPaper 25 May 2021 Article: 65

   

7. On the Boussinesq Equations with Non-monotone Temperature Profiles

   • Christian Zillinger

   OriginalPaper Open access 24 May 2021 Article: 64

8. Stability of Elliptic Solutions to the sinh-Gordon Equation

   • Wen-Rong Sun
   • Bernard Deconinck

   OriginalPaper 24 May 2021 Article: 63