@article{ASENS_2011_4_44_4_631_0,
     author = {Perin, Chlo\'e},
     title = {Elementary embeddings in torsion-free hyperbolic groups},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {631--681},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {Ser. 4, 44},
     number = {4},
     year = {2011},
     doi = {10.24033/asens.2152},
     zbl = {1245.20052},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/asens.2152/}
}