@article{DOCMA_2014__19__a30,
     author = {Melo, Margarida and Viviani, Filippo},
     title = {The {Picard} group of the compactified universal {Jacobian}},
     journal = {Documenta mathematica},
     pages = {457--507},
     publisher = {mathdoc},
     volume = {19},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2014__19__a30/}
}