@article{10_4153_CJM_1976_036_5,
     author = {Loveland, L. D.},
     title = {Continuous {Finite} {Apollonius} {Sets} in {Metric} {Spaces}},
     journal = {Canadian journal of mathematics},
     pages = {341--347},
     year = {1976},
     volume = {28},
     number = {2},
     doi = {10.4153/CJM-1976-036-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1976-036-5/}
}