@article{JRAM_1984__348_152608,
     author = {Wim H. Hesselink},
     title = {Schemes of linear configurations in projective plane.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {40--71},
     publisher = {mathdoc},
     volume = {348},
     year = {1984},
     zbl = {0518.14001},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1984__348_152608/}
}