Levi, Sandro. "Closed mappings are open at a $G_\delta $ set." Portugaliae mathematica 38.3-4 (1979): 7-9. <http://eudml.org/doc/115385>.
@article{Levi1979, author = {Levi, Sandro}, journal = {Portugaliae mathematica}, keywords = {cosed and open mapping; G-delta set}, language = {eng}, number = {3-4}, pages = {7-9}, publisher = {Sociedade Portuguesa de Matemática}, title = {Closed mappings are open at a $G_\delta $ set}, url = {http://eudml.org/doc/115385}, volume = {38}, year = {1979}, }
TY - JOUR AU - Levi, Sandro TI - Closed mappings are open at a $G_\delta $ set JO - Portugaliae mathematica PY - 1979 PB - Sociedade Portuguesa de Matemática VL - 38 IS - 3-4 SP - 7 EP - 9 LA - eng KW - cosed and open mapping; G-delta set UR - http://eudml.org/doc/115385 ER -
