@article{STUMA_1958__17_3_216924, author = {K. Urbanik}, title = {Effective processes in the sense of {H.} {Steinhaus}}, journal = {Studia Mathematica}, pages = {335}, publisher = {mathdoc}, volume = {17}, number = {3}, year = {1958}, language = {en}, url = {https://geodesic-test.mathdoc.fr/item/STUMA_1958__17_3_216924/} }