@article{01973832, title = {On the subgroups of the Picard group.}, journal = {Beitr\"age zur Algebra und Geometrie}, volume = {44}, year = {2003}, pages = {383-387}, zbl = {1043.20023}, language = {en}, url = {http://dml.mathdoc.fr/item/01973832} }
Yılmaz Özgür, Nihal. On the subgroups of the Picard group.. Beiträge zur Algebra und Geometrie, Tome 44 (2003) pp. 383-387. http://gdmltest.u-ga.fr/item/01973832/