@article{10_4153_CMB_1968_013_9,
     author = {Bonnett, D.A. and Porter, J.R.},
     title = {Matrix {Characterizations} of {Topological} {Properties}},
     journal = {Canadian mathematical bulletin},
     pages = {95--105},
     year = {1968},
     volume = {11},
     number = {1},
     doi = {10.4153/CMB-1968-013-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1968-013-9/}
}