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@article{PMF_1952_48_1_a8, author = {Pogorzelski, W.}, title = {La noyau singulier ferm\'e}, journal = {Prace Matematyczno-Fizyczne}, pages = {105--110}, publisher = {mathdoc}, volume = {48}, number = {1}, year = {1952}, language = {fr}, url = {http://geodesic.mathdoc.fr/item/PMF_1952_48_1_a8/} }
Pogorzelski, W. La noyau singulier fermé. Prace Matematyczno-Fizyczne, Tome 48 (1952) no. 1, pp. 105-110. http://geodesic.mathdoc.fr/item/PMF_1952_48_1_a8/