@article{AFST_2006_6_15_2_195_0,
     author = {Aberbach, Ian M. and Enescu, Florian},
     title = {When does the $F$-signature exist?},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {195--201},
     publisher = {Universit\'e Paul Sabatier, Institut de math\'ematiques},
     address = {Toulouse},
     volume = {Ser. 6, 15},
     number = {2},
     year = {2006},
     doi = {10.5802/afst.1118},
     zbl = {1118.13003},
     mrnumber = {2244213},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/afst.1118/}
}