@article{ADM_2019_28_1_a10,
     author = {Nguyen Hoang Son and Vu Duc Thi},
     title = {Some combinatorial characteristics of closure operations},
     journal = {Algebra and discrete mathematics},
     pages = {144--156},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2019_28_1_a10/}
}