@article{RMI_2009_2009_1_a4,
     author = {Gallardo-Guti\'errez, E. A. and  Gorkin, P.},
     title = {Cyclic {Blaschke} products for composition operators.},
     journal = {Revista matem\'atica iberoamericana},
     pages = {447-470},
     publisher = {mathdoc},
     volume = {25},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RMI_2009_2009_1_a4/}
}