text: *Airy wave theory
  *Benjamin–Bona–Mahony equation
  *Boussinesq approximation (water waves)
  *Cnoidal wave
  *Camassa–Holm equation
  *Davey–Stewartson equation
  *Kadomtsev–Petviashvili equation (also known as KP equation)
  *Korteweg–de Vries equation (also known as KdV equation)
  *Luke's variational principle
  *Nonlinear Schrödinger equation
  *Shallow water equations
  *Stokes' wave theory
  *Trochoidal wave
  *Wave turbulence
  *Whitham equation