@article{MABA_2003_17_3-4_a3,
     author = {Miguel Caldas},
     title = {SSome {Remarks} on {Weak} {\ensuremath{\beta}-Openness}},
     journal = {Mathematica balkanica},
     pages = {215},
     publisher = {mathdoc},
     volume = {17},
     number = {3-4},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/MABA_2003_17_3-4_a3/}
}