@article{MM2_1995__88_1_156120,
     author = {Christina Birkenhake},
     title = {Linear {Systems} on {Projective} {Spaces.}},
     journal = {Manuscripta mathematica},
     pages = {177--184},
     publisher = {mathdoc},
     volume = {88},
     number = {1},
     year = {1995},
     zbl = {0857.14030},
     url = {http://geodesic.mathdoc.fr/item/MM2_1995__88_1_156120/}
}