@article{10_4153_CMB_1968_061_6,
     author = {Baron, S.},
     title = {Note on {Epi} in},
     journal = {Canadian mathematical bulletin},
     pages = {503--504},
     year = {1968},
     volume = {11},
     number = {3},
     doi = {10.4153/CMB-1968-061-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1968-061-6/}
}