@article{ZNSL_1995_224_a13,
     author = {A. G. Izergin and N. A. Kitanin and N. A. Slavnov},
     title = {On correlation functions of the $XY$ model},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {178--191},
     publisher = {mathdoc},
     volume = {224},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1995_224_a13/}
}