@article{10_4153_CJM_1977_052_4,
     author = {Stephenson, R. M.},
     title = {Symmetrizable, -, and {Weakly} {First} {Countable} {Spaces}},
     journal = {Canadian journal of mathematics},
     pages = {480--488},
     year = {1977},
     volume = {29},
     number = {3},
     doi = {10.4153/CJM-1977-052-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-052-4/}
}