@article{AFM_2009_34_2_a19,
     author = {Alastair N. Fletcher and James K. Langley},
     title = {Meromorphic compositions and target functions},
     journal = {Annales Fennici Mathematici},
     pages = {615--636},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2009_34_2_a19/}
}