TY - JOUR AU - Jesús Álvarez López TI - On the first secondary invariant of Molino's central sheaf JO - Annales Polonici Mathematici PY - 1996 SP - 253 EP - 265 VL - 64 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap-64-3-253-265/ DO - 10.4064/ap-64-3-253-265 LA - en ID - 10_4064_ap_64_3_253_265 ER -