TY - JOUR AU - O. I. Bogoyavlenskii TI - Canonical forms for theĀ invariant tensors and $A$-$B$-$C$-cohomologies of integrable Hamiltonian systems JO - Sbornik. Mathematics PY - 1998 SP - 315 EP - 357 VL - 189 IS - 3 UR - http://geodesic.mathdoc.fr/item/SM_1998_189_3_a0/ LA - en ID - SM_1998_189_3_a0 ER -