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HerrnGottfried Köthe zum 60. Geburtstag am 25. 12. 1965 gewidmet
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Bucy, R.S., Maltese, G. A representation theorem for positive functionals on involution algebras. Math. Ann. 162, 364–367 (1966). https://doi.org/10.1007/BF01369109
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DOI: https://doi.org/10.1007/BF01369109