A continuous analogue of Gelfand-Tsetlin schemes and a realization of the principal series of irreducible unitary representations of the group GL(n, ℂ) in the space of functions on the variety of these schemes

I. M. Gelfand and M. A. Naimark, Tr. Mat. Inst. im. V.A. Steklova, Akad. Nauk SSSR 36, 1950.

I. M. Gelfand and M. L. Tsetlin, Dokl. Akad. Nauk SSSR 71, 825–828 (1950).

I. M. Gelfand and M. I. Graev, Izv. Akad. Nauk SSSR, Ser. Mat. 71, 1329–1358 (1965).

I. M. Gelfand, M. I. Graev, and I. I. Pyatetskii-Shapiro, Representation Theory and Automorphic Functions (Nauka, Moscow, 1966; Saunders, Philadelphia, 1968).

M. I. Graev, Dokl. Math. 68, 204–210 (2003) [Dokl. Akad. Nauk 392, 301–308 (2003)].

M. I. Graev, Acta Appl. Math. 81, 93–120 (2004).