Media type: E-Article Title: Invariants ℓ2 de relations d’équivalence et de groupes Contributor: Gaboriau, Damien Published: Springer Science and Business Media LLC, 2002 Published in: Publications mathématiques de l'IHÉS, 95 (2002) 1, Seite 93-150 Language: French DOI: 10.1007/s102400200002 ISSN: 0073-8301; 1618-1913 Origination: Footnote: Access State: Open Access