@article{10_4153_CMB_1974_083_6,
     author = {Bacsich, Paul D.},
     title = {Model {Theory} of {Epimorphisms}},
     journal = {Canadian mathematical bulletin},
     pages = {471--477},
     year = {1974},
     volume = {17},
     number = {4},
     doi = {10.4153/CMB-1974-083-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-083-6/}
}