@article{JOLT_2001_11_2_a15,
     author = {B. E. Breckner and W. A. F. Ruppert},
     title = {On {Asymptotic} {Behavior} and {Rectangular} {Band} {Structures} in {SL(2,} {R)}},
     journal = {Journal of Lie Theory},
     pages = {559--604},
     year = {2001},
     volume = {11},
     number = {2},
     zbl = {0982.22005},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2001_11_2_a15/}
}