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@article{COMIM_2009__17_1_a5, author = {Boonpok, Chawalit}, title = {$\partial$-closed sets in biclosure spaces}, journal = {Communications in Mathematics}, pages = {51--66}, publisher = {mathdoc}, volume = {17}, number = {1}, year = {2009}, mrnumber = {2582959}, zbl = {1237.54026}, language = {en}, url = {http://geodesic.mathdoc.fr/item/COMIM_2009__17_1_a5/} }
Boonpok, Chawalit. $\partial$-closed sets in biclosure spaces. Communications in Mathematics, Tome 17 (2009) no. 1, pp. 51-66. http://geodesic.mathdoc.fr/item/COMIM_2009__17_1_a5/