no. 1
A spectral theorem for matrices over fields of power series
Annales mathématiques Blaise Pascal, Tome 2 (1995) no. 1, pp. 169-179. 
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     title = {A spectral theorem for matrices over fields of power series},
     journal = {Annales math\'ematiques Blaise Pascal},
     pages = {169--179},
     publisher = {Laboratoires de Math\'ematiques Pures et Appliqu\'ees de l'Universit\'e Blaise Pascal},
     volume = {2},
     number = {1},
     year = {1995},
     mrnumber = {1342813},
     zbl = {0839.15020},
     language = {en},
     url = {http://archive.numdam.org/item/AMBP_1995__2_1_169_0/}
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Keller, Hans A.; Ochsenius A., Herminia. A spectral theorem for matrices over fields of power series. Annales mathématiques Blaise Pascal, Tome 2 (1995) no. 1, pp. 169-179. http://archive.numdam.org/item/AMBP_1995__2_1_169_0/

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