@article{KYB_2003_39_2_a8,
     author = {Gunawardena, Jeremy and Walsh, Cormac},
     title = {Iterates of maps which are non-expansive in {Hilbert's} projective metric},
     journal = {Kybernetika},
     pages = {193--204},
     year = {2003},
     volume = {39},
     number = {2},
     mrnumber = {1996557},
     zbl = {1247.47030},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2003_39_2_a8/}
}