@article{MMNP_2014_9_5_a3,
     author = {C. Fischbacher and G. Stolz},
     title = {The {Infinite} {XXZ} {Quantum} {Spin} {Chain} {Revisited:} {Structure} of {Low} {Lying} {Spectral} {Bands} and {Gaps}},
     journal = {Mathematical modelling of natural phenomena},
     pages = {44--72},
     publisher = {mathdoc},
     volume = {9},
     number = {5},
     year = {2014},
     doi = {10.1051/mmnp/20149504},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/mmnp/20149504/}
}