Ángel, Andrés Max Planck Institute for Mathematics, Max Planck Society;
https://doi.org/10.48550/arXiv.1509.07915 (Preprint)
http://dx.doi.org/10.2140/agt.2023.23.1959 (Publisher version)
Angel-Colman_Free and based path groupoids_2023.pdf (Publisher version), 732KB
Ángel, A., & Colman, H. (2023). Free and based path groupoids. Algebraic & Geometric Topology, 23(5), 1959-2008. doi:10.2140/agt.2023.23.1959.