@article{10_4153_CMB_1986_031_5,
     author = {Deveney, James K. and Mordeson, John N.},
     title = {Uniqueness of {Subfields}},
     journal = {Canadian mathematical bulletin},
     pages = {191--196},
     year = {1986},
     volume = {29},
     number = {2},
     doi = {10.4153/CMB-1986-031-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-031-5/}
}