@article{10_4153_CJM_1970_108_1,
     author = {Davis, Elwyn H.},
     title = {Incidence {Systems} associated with {Non-Planar} {Nearfields}},
     journal = {Canadian journal of mathematics},
     pages = {939--952},
     year = {1970},
     volume = {22},
     number = {5},
     doi = {10.4153/CJM-1970-108-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-108-1/}
}