@article{SIGMA_2014_10_a78,
     author = {Michele Arzano and Danilo Latini and Matteo Lotito},
     title = {Group {Momentum} {Space} and {Hopf} {Algebra} {Symmetries} of {Point} {Particles} {Coupled} to $2+1$ {Gravity}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2014},
     volume = {10},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2014_10_a78/}
}