@article{10_4064_cm_74_2_219_224,
     author = {Alejandro Illanes},
     title = {The openness of induced maps on hyperspaces},
     journal = {Colloquium Mathematicum},
     pages = {219--224},
     publisher = {mathdoc},
     volume = {74},
     number = {2},
     year = {1997},
     doi = {10.4064/cm-74-2-219-224},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-74-2-219-224/}
}