@article{JEMS_2012_14_3_a2,
     author = {David Iglesias-Ponte and Camille Laurent-Gengoux and Ping Xu},
     title = {Universal lifting theorem and {quasi-Poisson} groupoids},
     journal = {Journal of the European Mathematical Society},
     pages = {681--731},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {2012},
     doi = {10.4171/jems/315},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/315/}
}