@article{GMJ_1995__2_5_47341,
     author = {Tan, Kok-Keong and Xu, Hong-Kun},
     title = {Fixed points of semigroups of {Lipschitzian} mappings defined on nonconvex domains.},
     journal = {Georgian Mathematical Journal},
     pages = {547--558},
     publisher = {mathdoc},
     volume = {2},
     number = {5},
     year = {1995},
     zbl = {0830.47044},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1995__2_5_47341/}
}