TY - JOUR AU - MichaƂ Kisielewicz TI - On some applications of Bogoliubov method for hyperbolic equations JO - Annales Polonici Mathematici PY - 1975 SP - 1 EP - 13 VL - 31 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap-31-1-1-13/ DO - 10.4064/ap-31-1-1-13 LA - en ID - 10_4064_ap_31_1_1_13 ER -