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@article{10_14708_cm_v25i2_6141, author = {A. Spakowski}, title = {On approximation by step multifunctions}, journal = {Commentationes Mathematicae}, pages = { 363--371}, publisher = {mathdoc}, volume = {25}, number = {2}, year = {1985}, doi = {10.14708/cm.v25i2.6141}, language = {pl}, url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v25i2.6141/} }
A. Spakowski. On approximation by step multifunctions. Commentationes Mathematicae, Tome 25 (1985) no. 2, pp. 363-371. doi : 10.14708/cm.v25i2.6141. http://geodesic.mathdoc.fr/articles/10.14708/cm.v25i2.6141/
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