%0 Journal Article %A D. Repovš %A A. B. Skopenkov %T Obstructions for Seifert fibrations and an extension of the Bolsinov--Fomenko theorem on integrable Hamiltonian systems %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1999 %P 652-653 %V 54 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1999_54_3_a17/ %G en %F RM_1999_54_3_a17