TY - JOUR AU - Popa, Sorin AU - Vaes, Stefaan TI - Actions of 𝔽_{∞} whose II₁ factors and orbit equivalence relations have prescribed fundamental group JO - Journal of the American Mathematical Society PY - 2010 SP - 383 EP - 403 VL - 23 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-09-00644-4/ DO - 10.1090/S0894-0347-09-00644-4 ID - 10_1090_S0894_0347_09_00644_4 ER -