@article{DMGAA_2009_29_2_a5,
     author = {Khampakdee, Jeeranunt and Boonpok, Chawalit},
     title = {Semi-open sets in biclosure spaces},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {181--201},
     publisher = {mathdoc},
     volume = {29},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2009_29_2_a5/}
}