TY - JOUR AU - Rosenblatt, Joseph AU - Taylor, Michael TI - Group Actions and Singular Martingales II, The Recognition Problem JO - Canadian journal of mathematics PY - 2004 SP - 431 EP - 448 VL - 56 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-020-2/ DO - 10.4153/CJM-2004-020-2 ID - 10_4153_CJM_2004_020_2 ER -