@article{10_4153_CJM_1975_046_6,
     author = {Breen, Marilyn},
     title = {Points of {Local} {Nonconvexity} and {Finite} {Unions} of {Convex} {Sets}},
     journal = {Canadian journal of mathematics},
     pages = {376--383},
     year = {1975},
     volume = {27},
     number = {2},
     doi = {10.4153/CJM-1975-046-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-046-6/}
}