Higgins, John Rowland, 1935- Completeness and basis properties of sets of special functions / J. R. Higgins - Cambridge : Cambridge University Press, 1977 - x, 134 p. ; 22 cm. - Cambridge tracts in mathematics no.72 . Includes index. Bibliography : p. 126-129 ISBN: 0521213762 Subjects--Topical Terms: Functions, specialSeries, OrthogonalLp Spaces