"Boussinesq" . . "Boussinesq approximation (water waves)" . "Boussinesq equations" . . . "Boussinesq approximation for water waves" . "water waves" . . "Boussinesq approximation" . . . . "Boussinesq approximation (water waves)" . . "Boussinesq approximation (water waves)#Linear frequency dispersion" . . "Boussinesq model" . "Boussinesq equation" .