MathSciNet bibliographic data MR563344 (83b:47047a) 47B50 (44A60) Kreĭn, M. G.; Langer, Heinz On some extension problems which are closely connected with the theory of Hermitian operators in a space $\Pi \sb{\kappa }$$\Pi \sb{\kappa }$. III. Indefinite analogues of the Hamburger and Stieltjes moment problems. Part I. Beiträge Anal. No. 14 (1979), 25–40 (loose errata). Links to the journal or article are not yet available

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