@article{10_4153_CMB_1964_040_4,
     author = {Kleisli, H. and Wu, Y.C.},
     title = {On {Injective} {Sheaves}},
     journal = {Canadian mathematical bulletin},
     pages = {415--423},
     year = {1964},
     volume = {7},
     number = {3},
     doi = {10.4153/CMB-1964-040-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1964-040-4/}
}