%0 Journal Article %A M. A. Tuzhilin %T Singularities of integrable Hamiltonian systems with the same boundary foliation. An infinite series %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2016 %P 14-20 %N 5 %U http://geodesic.mathdoc.fr/item/VMUMM_2016_5_a1/ %G ru %F VMUMM_2016_5_a1