@article{10_2140_agt_2007_7_339,
     author = {de Silva, Vin and Ghrist, Robert},
     title = {Coverage in sensor networks via persistent homology},
     journal = {Algebraic and Geometric Topology},
     pages = {339--358},
     year = {2007},
     volume = {7},
     number = {1},
     doi = {10.2140/agt.2007.7.339},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2007.7.339/}
}