@article{MZ_1983__184_173365,
     author = {Albrecht Beutelspacher},
     title = {On {Baer} {Subspaces} of {Finite} {Projective} {Spaces.}},
     journal = {Mathematische Zeitschrift},
     pages = {301--320},
     publisher = {mathdoc},
     volume = {184},
     year = {1983},
     zbl = {0506.51008},
     url = {http://geodesic.mathdoc.fr/item/MZ_1983__184_173365/}
}