TY - JOUR AU - I. M. Krichever TI - “Hessians” of integrals of the Korteweg–de Vries equation and perturbations of finite-zone solutions JO - Doklady Akademii Nauk PY - 1983 SP - 1312 EP - 1317 VL - 270 IS - 6 UR - http://geodesic.mathdoc.fr/item/DAN_1983_270_6_a6/ LA - ru ID - DAN_1983_270_6_a6 ER -