@article{DAN_1982_262_1_a18,
     author = {F. A. Smirnov},
     title = {Gelfand--Levitan equation for the quantum nonlinear {Schr\"odinger} model with attraction},
     journal = {Doklady Akademii Nauk},
     pages = {78--83},
     publisher = {mathdoc},
     volume = {262},
     number = {1},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_262_1_a18/}
}