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  1.  33
    (2 other versions)A Decidable Class of Equations in Recursive Arithmetic.R. L. Goodstein & R. D. Lee - 1966 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 12 (1):235-239.
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  2.  38
    An application of mathematical logic to the integer linear programming problem.R. D. Lee - 1972 - Notre Dame Journal of Formal Logic 13 (2):279-282.
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  3.  20
    (1 other version)The substitution schema in recursive arithmetic.R. D. Lee - 1965 - Notre Dame Journal of Formal Logic 6 (3):193-200.