@article{ASNSP_1990_4_17_1_111_0,
     author = {Lee, Sung J. and Nashed, M. Zuhair},
     title = {Algebraic and topological selections of multi-valued linear relations},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {111--126},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 17},
     number = {1},
     year = {1990},
     mrnumber = {1074628},
     zbl = {0722.47004},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1990_4_17_1_111_0/}
}