@article{10_4153_CJM_1975_119_4,
     author = {Bruen, A.},
     title = {Subregular {Spreads} and {Indicator} {Sets}},
     journal = {Canadian journal of mathematics},
     pages = {1141--1148},
     year = {1975},
     volume = {27},
     number = {5},
     doi = {10.4153/CJM-1975-119-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-119-4/}
}