@article{10_2140_agt_2003_3_1167,
     author = {Conant, James and Vogtmann, Karen},
     title = {On a theorem of {Kontsevich}},
     journal = {Algebraic and Geometric Topology},
     pages = {1167--1224},
     year = {2003},
     volume = {3},
     number = {2},
     doi = {10.2140/agt.2003.3.1167},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2003.3.1167/}
}