Joel Moses, Richard Zippel. An extension of Liouville s theorem. In Edward W. Ng, editor, Symbolic and Algebraic Computation, EUROSAM 79, An International Symposiumon Symbolic and Algebraic Computation, Marseille, France, June 1979, Proceedings. Volume 72 of Lecture Notes in Computer Science, pages 426-430, Springer, 1979.
Abstract is missing.