TY - JOUR AU - Kopáčková-Suchá, Marie TI - On the weakly nonlinear wave equation involving a small parameter at the highest derivative JO - Czechoslovak Mathematical Journal PY - 1969 SP - 469 EP - 491 VL - 19 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1969.100915/ DO - 10.21136/CMJ.1969.100915 LA - en ID - 10_21136_CMJ_1969_100915 ER -