@article{SIGMA_2005_1_a18,
     author = {Alexey Borisov and Alexander Shapovalov and Andrey Trifonov},
     title = {Transverse {Evolution} {Operator} for the {Gross{\textendash}Pitaevskii} {Equation} in {Semiclassical} {Approximation}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2005},
     volume = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2005_1_a18/}
}