%0 Journal Article %A M. I. Gordin %T Double extensions of dynamical systems and a construction of mixing filtrations.~II. Quasihyperbolic %J Zapiski Nauchnykh Seminarov POMI %D 1999 %P 103-118 %V 260 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1999_260_a6/ %G ru %F ZNSL_1999_260_a6