@article{100379, author = {Vlastimil Pt\'ak}, title = {On the closed graph theorem}, journal = {Czechoslovak Mathematical Journal}, volume = {09}, year = {1959}, pages = {523-527}, zbl = {0093.12002}, mrnumber = {0115061}, language = {en}, url = {http://dml.mathdoc.fr/item/100379} }
Pták, Vlastimil. On the closed graph theorem. Czechoslovak Mathematical Journal, Tome 09 (1959) pp. 523-527. http://gdmltest.u-ga.fr/item/100379/
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