@article{10_2140_agt_2011_11_1793,
     author = {Sageev, Michah and Wise, Daniel T},
     title = {Periodic flats in {CAT(0)} cube complexes},
     journal = {Algebraic and Geometric Topology},
     pages = {1793--1820},
     year = {2011},
     volume = {11},
     number = {3},
     doi = {10.2140/agt.2011.11.1793},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2011.11.1793/}
}