Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MAT_1960_4_6_a3, author = {V. Pt\'ak}, title = {On the closed graph theorem}, journal = {Matematika}, pages = {69--72}, publisher = {mathdoc}, volume = {4}, number = {6}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1960_4_6_a3/} }
V. Pták. On the closed graph theorem. Matematika, Tome 4 (1960) no. 6, pp. 69-72. http://geodesic.mathdoc.fr/item/MAT_1960_4_6_a3/