On a question of Borsuk concerning non-continuous retracts I

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

Kenneth Kellum Fundamenta Mathematicae 87 (1975), 89-92 DOI: 10.4064/fm-87-2-89-92