TY - JOUR AU - S. L. Ziglin TI - Branching of solutions and nonexistence of first integrals in Hamiltonian mechanics.~I JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1982 SP - 30 EP - 41 VL - 16 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1982_16_3_a1/ LA - ru ID - FAA_1982_16_3_a1 ER -