TY - JOUR AU - M. L. Blank TI - Recurrence for free semigroups of measurable maps JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2019 SP - 758 EP - 760 VL - 74 IS - 4 UR - http://geodesic.mathdoc.fr/item/RM_2019_74_4_a5/ LA - en ID - RM_2019_74_4_a5 ER -