On a Freedman's problem

Instytut Matematyczny Polskiej Akademii Nauk / Institute of Mathematics / Publishing house / Journals and Serials / Fundamenta Mathematicae / All issues

Czesław Ryll-Nardzewski Fundamenta Mathematicae 57 (1965), 273-274 DOI: 10.4064/fm-57-3-273-274