@article{MABA_1998_12_3-4_a4,
     author = {J. Dontchev},
     title = {Between {A} and {B-Sets}},
     journal = {Mathematica balkanica},
     pages = {295},
     year = {1998},
     volume = {12},
     number = {3-4},
     url = {http://geodesic.mathdoc.fr/item/MABA_1998_12_3-4_a4/}
}