@article{SMJ2_2008_34_4_a0,
     author = {De Beule, J. and Metsch, K. and Klein, A. and Storme, L.},
     title = {Partial {Ovoids} and {Partial} {Spreads} of {Classical} {Finite} {Polar} {Spaces}},
     journal = {Serdica Mathematical Journal},
     pages = {689--714},
     publisher = {mathdoc},
     volume = {34},
     number = {4},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2008_34_4_a0/}
}