Hamburger, H. L. Linear transformations in n-dimensional vector space; an introduction to the theory of Hilbert space, by H.L. Hamburger and M.E. Grimshaw. - Cambridge [Eng.] University Press : 1951. - vii, 195 p. 23 cm. bibliografía al final de capítulo. Nat. Bib. No.: GB51-15575 Subjects--Topical Terms: Transformations (Mathematics)Transformaciones (Matemáticas)Hyperspace. Subjects--Index Terms: Hiperespacio. Universal Decimal Class. No.: 519.56