TY - JOUR AU - N. Ivochkina AU - O. Ladyzhenskaya TI - Flows generated by symmetric functions of the eigenvalues of the Hessian JO - Zapiski Nauchnykh Seminarov POMI PY - 1995 SP - 127 EP - 144 VL - 221 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1995_221_a8/ LA - en ID - ZNSL_1995_221_a8 ER -