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Schriften==* Differential equations from an algebraic standpoint, New York, American Mathematical Society 1932* Theory of Functions, New York 1945, 1947* Integration in finite terms: Liouville's Theory of Elementary Methods, Columbia University Press 1948* Differential Algebra, American Mathematical Society 1950, Dover 1966== Weblinks==* Nachruf von E. R. Lorch, Bulletin of the American Mathematical Society, Band 57, 307-318.
Selected works==* Differential equations from the algebraic standpoint, New York, American Mathematical Society 1932* Theory of Functions, New York 1945, 1947* Integration in finite terms: Liouville's Theory of Elementary Methods, Columbia University Press 1948* Differential Algebra, American Mathematical Society 1950, Dover 1966==See also==*Ritt theorem==References.
