@article{PORMA_1976__35_1_115273,
     author = {Abramson, Morton and Moser, W.O.J.},
     title = {Linear and ring arrangements},
     journal = {Portugaliae mathematica},
     pages = {17--34},
     year = {1976},
     volume = {35},
     number = {1},
     mrnumber = {0505529},
     zbl = {0385.05010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1976__35_1_115273/}
}