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@article{MZ_1975__145_172284, author = {Albrecht Beutelspacher}, title = {Partial {Spreads} in {Finite} {Projective} {Spaces} and {Partial} {Designs.}}, journal = {Mathematische Zeitschrift}, pages = {211--230}, publisher = {mathdoc}, volume = {145}, year = {1975}, zbl = {0297.50018}, url = {http://geodesic.mathdoc.fr/item/MZ_1975__145_172284/} }
Albrecht Beutelspacher. Partial Spreads in Finite Projective Spaces and Partial Designs.. Mathematische Zeitschrift, Tome 145 (1975), pp. 211-230. http://geodesic.mathdoc.fr/item/MZ_1975__145_172284/