Abbaspour, Hossein Max Planck Institute for Mathematics, Max Planck Society;
Zeinalian, Mahmoud Max Planck Institute for Mathematics, Max Planck Society;
Abbaspour, H., & Zeinalian, M. (2007). String bracket and flat connections. Algebraic & Geometric Topology, 7, 197-231. doi:10.2140/agt.2007.7.197.