@article{10_2140_agt_2011_11_2477,
     author = {Hardt, Robert and Lambrechts, Pascal and Turchin, Victor and Voli\'c, Ismar},
     title = {Real homotopy theory of semi-algebraic sets},
     journal = {Algebraic and Geometric Topology},
     pages = {2477--2545},
     year = {2011},
     volume = {11},
     number = {5},
     doi = {10.2140/agt.2011.11.2477},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2011.11.2477/}
}