@article{00569413, title = {Decomposition of openness.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {17}, year = {1994}, pages = {413-415}, doi = {10.1155/S016117129400058X}, zbl = {0798.54018}, language = {en}, url = {http://dml.mathdoc.fr/item/00569413} }
Baker, C.W. Decomposition of openness.. International Journal of Mathematics and Mathematical Sciences, Tome 17 (1994) pp. 413-415. doi : 10.1155/S016117129400058X. http://gdmltest.u-ga.fr/item/00569413/