@article{ZNSL_2018_473_a2,
     author = {N. M. Belousov and S. E. Derkachov},
     title = {$Q$-operator for the quantum {NLS} model},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {34--65},
     publisher = {mathdoc},
     volume = {473},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2018_473_a2/}
}