@article{SIGMA_2005_1_a12,
     author = {Iosif Khriplovich and Gennady Ruban},
     title = {Simple {Derivation} of {Quasinormal} {Modes} for {Arbitrary} {Spins}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2005},
     volume = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2005_1_a12/}
}