%0 Journal Article %A O. I. Bogoyavlenskii %T Canonical forms for theĀ invariant tensors and $A$-$B$-$C$-cohomologies of integrable Hamiltonian systems %J Sbornik. Mathematics %D 1998 %P 315-357 %V 189 %N 3 %U http://geodesic.mathdoc.fr/item/SM_1998_189_3_a0/ %G en %F SM_1998_189_3_a0