@article{10_2140_agt_2007_7_197,
     author = {Abbaspour, Hossein and Zeinalian, Mahmoud},
     title = {String bracket and flat connections},
     journal = {Algebraic and Geometric Topology},
     pages = {197--231},
     year = {2007},
     volume = {7},
     number = {1},
     doi = {10.2140/agt.2007.7.197},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2007.7.197/}
}