@article{JAC_2001__14_1_a2,
     author = {Lunardon, G. and Polverino, O.},
     title = {Blocking sets and derivable partial spreads},
     journal = {Journal of Algebraic Combinatorics},
     pages = {49--56},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2001__14_1_a2/}
}