@article{ZNSL_2018_473_a3,
     author = {N. Bogoliubov and C. Malyshev},
     title = {The ground state-vector of the $XY$ {Heisenberg} chain and the {Gauss} decomposition},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {66--76},
     publisher = {mathdoc},
     volume = {473},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2018_473_a3/}
}