@article{10_4153_CJM_1980_048_8,
     author = {Bruen, Aiden A.},
     title = {Blocking {Sets} and {Skew} {Subspaces} of {Projective} {Space}},
     journal = {Canadian journal of mathematics},
     pages = {628--630},
     year = {1980},
     volume = {32},
     number = {3},
     doi = {10.4153/CJM-1980-048-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-048-8/}
}