@article{10_2140_agt_2006_6_763,
     author = {Blanc, David and Johnson, Mark W and Turner, James M},
     title = {On realizing diagrams of {\ensuremath{\Pi}{\textendash}algebras}},
     journal = {Algebraic and Geometric Topology},
     pages = {763--807},
     year = {2006},
     volume = {6},
     number = {2},
     doi = {10.2140/agt.2006.6.763},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2006.6.763/}
}