@article{10_1017_S0017089523000393,
     author = {Brazas, Jeremy and Fabel, Paul},
     title = {A natural pseudometric on homotopy groups of metric spaces},
     journal = {Glasgow mathematical journal},
     pages = {162--174},
     year = {2024},
     volume = {66},
     number = {1},
     doi = {10.1017/S0017089523000393},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089523000393/}
}