@article{10_4064_aa_41_3_213_221,
     author = {Jacob Beard and Robert Mcconnel},
     title = {Matrix field extensions},
     journal = {Acta Arithmetica},
     pages = {213--221},
     year = {1982},
     volume = {41},
     number = {3},
     doi = {10.4064/aa-41-3-213-221},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-41-3-213-221/}
}