TY - JOUR AU - V. A. Tabueva TI - Successive approximations of Tricomi for finding a~solution of the differential equation $\ddot x=f(x,\,\dot x)$ periodic in~$x$ JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1959 SP - 169 EP - 173 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1959_6_a20/ LA - ru ID - IVM_1959_6_a20 ER -