TY - JOUR AU - Ben-Naoum, Abdou Kouider TI - The role of the Lagrange constant in some nonlinear waves equations. JO - Rendiconti del seminario matematico PY - 1999 SP - 175 EP - 184 VL - 57 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RSM_1999__57_3_126553/ LA - en ID - RSM_1999__57_3_126553 ER -