@article{MASLO_1993__43_4_a7,
     author = {Popa, Valeriu and Noiri, Takashi},
     title = {On upper and lower $alpha$-continuous multifunctions},
     journal = {Mathematica slovaca},
     pages = {477--491},
     publisher = {mathdoc},
     volume = {43},
     number = {4},
     year = {1993},
     mrnumber = {1248981},
     zbl = {0837.54010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1993__43_4_a7/}
}