@article{MABA_1994_8_4_a6,
     author = {Dimitrina Stavrova},
     title = {Improvements of {Cardinal} {Inequalities} for {Topological} {Spaces} and k-structures},
     journal = {Mathematica balkanica},
     pages = {359},
     year = {1994},
     volume = {8},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/MABA_1994_8_4_a6/}
}