TY - JOUR AU - Ekaterina Shemyakova TI - Invertible Darboux Transformations JO - Symmetry, integrability and geometry: methods and applications PY - 2013 VL - 9 UR - http://geodesic.mathdoc.fr/item/SIGMA_2013_9_a1/ LA - en ID - SIGMA_2013_9_a1 ER -