Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MAT_1969_13_2_a1, author = {D. Mumford}, title = {Picard groups of moduli problems}, journal = {Matematika}, pages = {26--63}, publisher = {mathdoc}, volume = {13}, number = {2}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1969_13_2_a1/} }
D. Mumford. Picard groups of moduli problems. Matematika, Tome 13 (1969) no. 2, pp. 26-63. http://geodesic.mathdoc.fr/item/MAT_1969_13_2_a1/