@article{10_4171_ggd_191,
     author = {Josiney A. Souza},
     title = {Chain recurrence in $\beta $-compactifications of topological groups},
     journal = {Groups, geometry, and dynamics},
     pages = {475--493},
     year = {2013},
     volume = {7},
     number = {2},
     doi = {10.4171/ggd/191},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/191/}
}