@article{10_1017_S0017089524000429,
     author = {K\k{e}dra, Jarek and Libman, Assaf},
     title = {Are free groups of different ranks bi-invariantly quasi-isometric?},
     journal = {Glasgow mathematical journal},
     pages = {356--364},
     year = {2025},
     volume = {67},
     number = {3},
     doi = {10.1017/S0017089524000429},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089524000429/}
}