An exact sequence from the nth to the (n-1)-st fundamental group

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

J. Quigley Fundamenta Mathematicae 77 (1973), 195-210 DOI: 10.4064/fm-77-3-195-210