@article{MM3_2009_13_1_a3,
     author = {Erdal Ekici},
     title = {On $e^{\ast}${-Open} {Sets} and $(\mathcal{D},\mathcal{S})^{\ast}${-Sets}},
     journal = {Mathematica Moravica},
     pages = {29 - 36},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2009},
     url = {https://geodesic-test.mathdoc.fr/item/MM3_2009_13_1_a3/}
}