@article{AIHPC_1986__3_4_285_0, author = {Gutkin, Eug\`ene}, title = {Quantum nonlinear {Schr\"odinger} equation. {I.} {Intertwining} operators}, journal = {Annales de l'I.H.P. Analyse non lin\'eaire}, pages = {285--314}, publisher = {Gauthier-Villars}, volume = {3}, number = {4}, year = {1986}, zbl = {0614.35086}, mrnumber = {853384}, language = {en}, url = {http://www.numdam.org/item/AIHPC_1986__3_4_285_0/} }