@article{10_4153_CJM_1975_003_6,
     author = {Hager, Anthony W.},
     title = {Perfect {Maps} and {Epi-Reflective} {Hulls}},
     journal = {Canadian journal of mathematics},
     pages = {11--24},
     year = {1975},
     volume = {27},
     number = {1},
     doi = {10.4153/CJM-1975-003-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-003-6/}
}