@article{IM2_1974_8_2_a3,
     author = {V. L. Popov},
     title = {Picard groups of homogeneous spaces of linear algebraic groups and one-dimensional homogeneous vector bundles},
     journal = {Izvestiya. Mathematics},
     pages = {301--327},
     year = {1974},
     volume = {8},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1974_8_2_a3/}
}