@article{2783, author = {Abramson, Morton and Moser, W.O.J.}, title = {Linear and ring arrangements}, journal = {Portugaliae mathematica}, volume = {35}, year = {1976}, pages = {17-34}, zbl = {0385.05010}, mrnumber = {0505529}, language = {en}, url = {http://dml.mathdoc.fr/item/2783} }
Abramson, Morton; Moser, W.O.J. Linear and ring arrangements. Portugaliae mathematica, Tome 35 (1976) pp. 17-34. http://gdmltest.u-ga.fr/item/2783/