Borisov, Dennis Max Planck Institute for Mathematics, Max Planck Society;
borisov_what_2011.pdf (Any fulltext), 175KB
Borisov, D. (2011). What is the higher-dimensional infinitesimal groupoid of a manifold? Journal of the Australian Mathematical Society, 90(2), 155-170. doi:10.1017/S1446788711001248.