TY - JOUR AU - M. I. Gordin TI - Double extensions of dynamical systems and a construction of mixing filtrations JO - Zapiski Nauchnykh Seminarov POMI PY - 1997 SP - 61 EP - 72 VL - 244 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1997_244_a3/ LA - ru ID - ZNSL_1997_244_a3 ER -