Geodesic
Analytic properties of Schmidt pairs for a Hankel operator and the generalized Schur–Takagi problem
Sbornik. Mathematics, Tome 15 (1971) no. 1, pp. 31-73 Cet article a éte moissonné depuis la source Math-Net.Ru

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This article is a study of infinite Hankel matrices and approximation problems connected with them. Bibliography: 22 titles. 
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V. M. Adamyan; D. Z. Arov; M. G. Krein. Analytic properties of Schmidt pairs for a Hankel operator and the generalized Schur–Takagi problem. Sbornik. Mathematics, Tome 15 (1971) no. 1, pp. 31-73. http://geodesic.mathdoc.fr/item/SM_1971_15_1_a2/

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[17] V. M. Adamyan, D. Z. Arov, M. G. Krein, “Ob ogranichennykh operatorakh, kommutiruyuschikh s szhatiem klassa $C_{00}$ edinichnogo ranga neunitarnosti”, Funkts. analiz, 3:3 (1969), 86–87 | MR | Zbl

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[20] I. Ts. Gokhberg, M. K. Zambitskii, “O normalno razreshimykh operatorakh v prostranstvakh s dvumya normami”, Izv. AN Mold. SSR, 6 (1964), 80–84 | Zbl

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