@article{10_4064_ap78_2_3,
     author = {Lidong Wang and Gongfu Liao and Yu Yang},
     title = {Recurrent point set of the shift on ${\mit \Sigma }$ and strong chaos},
     journal = {Annales Polonici Mathematici},
     pages = {123--130},
     publisher = {mathdoc},
     volume = {78},
     number = {2},
     year = {2002},
     doi = {10.4064/ap78-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap78-2-3/}
}