@article{CMJ_2005__55_1_a9,
     author = {Hansell, R. W. and Oncina, L.},
     title = {Generalized first class selectors for upper semi-continuous set-valued maps in {Banach} spaces},
     journal = {Czechoslovak Mathematical Journal},
     pages = {145--155},
     publisher = {mathdoc},
     volume = {55},
     number = {1},
     year = {2005},
     mrnumber = {2121662},
     zbl = {1081.46016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2005__55_1_a9/}
}