@article{10_4064_sm175_3_1,
     author = {T. \'Alvarez},
     title = {Characterisations of open multivalued linear operators},
     journal = {Studia Mathematica},
     pages = {205--212},
     year = {2006},
     volume = {175},
     number = {3},
     doi = {10.4064/sm175-3-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm175-3-1/}
}