@article{10_4153_CMB_1980_026_2,
     author = {Hu, Thakyin},
     title = {Fixed {Point} {Theorems} for {Multi-Valued} {Mappings}},
     journal = {Canadian mathematical bulletin},
     pages = {193--197},
     year = {1980},
     volume = {23},
     number = {2},
     doi = {10.4153/CMB-1980-026-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1980-026-2/}
}