کتاب های Umanskiy, Ya. L.
Four-dimensional integrable Hamiltonian systems with simple singular points (topological aspects)
Lerman, L. M.; Umanskiy, Ya. L., 1998
Four-dimensional integrable Hamiltonian systems with simple singular points (topological aspects)
Lerman, L. M.; Umanskiy, Ya. L., 1998
Four-Dimensional Integrable Hamiltonian Systems with Simple Singular Points (Topological Aspects)
Lerman, Lev M.; Umanskiy, Ya. L, 1998
