@article{10_2140_agt_2009_9_2079,
     author = {Navas, Andr\'es and Rivas, Crist\'obal},
     title = {A new characterization of {Conrad{\textquoteright}s} property for group orderings, with applications},
     journal = {Algebraic and Geometric Topology},
     pages = {2079--2100},
     year = {2009},
     volume = {9},
     number = {4},
     doi = {10.2140/agt.2009.9.2079},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2009.9.2079/}
}