TY - JOUR AU - Alexey Borisov AU - Alexander Shapovalov AU - Andrey Trifonov TI - Transverse Evolution Operator for the Gross–Pitaevskii Equation in Semiclassical Approximation JO - Symmetry, integrability and geometry: methods and applications PY - 2005 VL - 1 UR - http://geodesic.mathdoc.fr/item/SIGMA_2005_1_a18/ LA - en ID - SIGMA_2005_1_a18 ER -