@article{RM_2019_74_4_a5,
     author = {M. L. Blank},
     title = {Recurrence for free semigroups of measurable maps},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {758--760},
     year = {2019},
     volume = {74},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2019_74_4_a5/}
}