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@article{JRAM_1980__313_152196, author = {R. Mennicken and B. Sagraloff}, title = {Characterizations of nearly-openness.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {105--115}, publisher = {mathdoc}, volume = {313}, year = {1980}, zbl = {0431.46001}, url = {http://geodesic.mathdoc.fr/item/JRAM_1980__313_152196/} }
R. Mennicken; B. Sagraloff. Characterizations of nearly-openness.. Journal für die reine und angewandte Mathematik, Tome 313 (1980), pp. 105-115. http://geodesic.mathdoc.fr/item/JRAM_1980__313_152196/