@article{JLT_2010_20_2_JLT_2010_20_2_a0,
     author = {W. Bertram and M. Kinyon },
     title = {Associative {Geometries.} {I:} {Torsors,} {Linear} {Relations} and {Grassmannians}},
     journal = {Journal of Lie theory},
     pages = {215--252},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {2010},
     url = {http://geodesic.mathdoc.fr/item/JLT_2010_20_2_JLT_2010_20_2_a0/}
}