@article{SIGMA_2011_7_a3,
     author = {Minoru Takahashi},
     title = {Correlation {Function} and {Simplified} {TBA} {Equations} for {XXZ} {Chain}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2011},
     volume = {7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2011_7_a3/}
}