@article{FORUM_1990__2_3_141648,
     author = {Alojzy Lechicki and Sandro Levi},
     title = {Extensions of {Semicontinuous} {Multifunctions.}},
     journal = {Forum mathematicum},
     pages = {341--360},
     publisher = {mathdoc},
     volume = {2},
     number = {3},
     year = {1990},
     zbl = {0711.54011},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1990__2_3_141648/}
}