@article{GT_2025_29_1_a0,
     author = {Chalopin, J\'er\'emie and Chepoi, Victor and Genevois, Anthony and Hirai, Hiroshi and Osajda, Damian},
     title = {Helly groups},
     journal = {Geometry & topology},
     pages = {1--70},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {2025},
     doi = {10.2140/gt.2025.29.1},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2025.29.1/}
}