TY - JOUR AU - N. A. Tikhonov TI - Travelling waves in a nonlinear medium and the determination from them of properties of the medium JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1971 SP - 144 EP - 151 VL - 11 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1971_11_1_a14/ LA - ru ID - ZVMMF_1971_11_1_a14 ER -