TY - JOUR AU - V. P. Fedotov TI - Structures generated by invariants JO - Zapiski Nauchnykh Seminarov POMI PY - 1979 SP - 83 EP - 92 VL - 83 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1979_83_a4/ LA - ru ID - ZNSL_1979_83_a4 ER -