TY - JOUR AU - Alexander Sakhnovich TI - Bäcklund–Darboux Transformation for Non-Isospectral Canonical System and Riemann–Hilbert Problem JO - Symmetry, integrability and geometry: methods and applications PY - 2007 VL - 3 UR - http://geodesic.mathdoc.fr/item/SIGMA_2007_3_a53/ LA - en ID - SIGMA_2007_3_a53 ER -