TY - JOUR AU - D. A. Fedoseev TI - Bifurcation diagrams of natural Hamiltonian systems on Bertrand manifolds JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 2015 SP - 62 EP - 65 IS - 1 UR - http://geodesic.mathdoc.fr/item/VMUMM_2015_1_a11/ LA - ru ID - VMUMM_2015_1_a11 ER -