%0 Journal Article %A J. Beard %T A rational canonical form for matrix fields %J Acta Arithmetica %D 1973 %P 331-335 %V 25 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-25-4-331-335/ %R 10.4064/aa-25-4-331-335 %G en %F 10_4064_aa_25_4_331_335