@article{10_4064_ap_54_1_85_91,
     author = {Jean-Pierre Aubin and H\'el\`ene Frankowska and Andrzej Lasota},
     title = {Poincar\'e's recurrence theorem for set-valued dynamical systems},
     journal = {Annales Polonici Mathematici},
     pages = {85--91},
     publisher = {mathdoc},
     volume = {54},
     number = {1},
     year = {1991},
     doi = {10.4064/ap-54-1-85-91},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-54-1-85-91/}
}