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Symmetry and separation of variables. With a foreword by Richard Askey. (English) Zbl 0368.35002
Encyclopedia of Mathematics and its Applications. Vol. 4. Reading, Massachusetts: Addison-Wesley Publishing Company. XXX, 285 p. $ 21.50 (1977).

35-02 Research exposition (monographs, survey articles) pertaining to partial differential equations
35A25 Other special methods applied to PDEs
22E70 Applications of Lie groups to the sciences; explicit representations
33C80 Connections of hypergeometric functions with groups and algebras, and related topics