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@article{MZ_1986__192_173748, author = {Robert DeVos}, title = {Combinations of {Distinguished} {Subsets} and {Conullity.}}, journal = {Mathematische Zeitschrift}, pages = {447--452}, publisher = {mathdoc}, volume = {192}, year = {1986}, zbl = {0627.46006}, url = {http://geodesic.mathdoc.fr/item/MZ_1986__192_173748/} }
Robert DeVos. Combinations of Distinguished Subsets and Conullity.. Mathematische Zeitschrift, Tome 192 (1986), pp. 447-452. http://geodesic.mathdoc.fr/item/MZ_1986__192_173748/