@article{10_4153_S0008439524000912,
     author = {Carvalho, Andr\'e},
     title = {A characterization of virtually free groups among hyperbolic groups},
     journal = {Canadian mathematical bulletin},
     pages = {477--483},
     year = {2025},
     volume = {68},
     number = {2},
     doi = {10.4153/S0008439524000912},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008439524000912/}
}