TY - JOUR AU - S. B. Kuksin TI - Perturbation theory for quasiperiodic solutions of infinite-dimensional Hamiltonian systems, and its application to the Korteweg--de~Vries equation JO - Sbornik. Mathematics PY - 1989 SP - 397 EP - 413 VL - 64 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1989_64_2_a7/ LA - en ID - SM_1989_64_2_a7 ER -