Geodesic
On a problem of Szeg\"o, Kac, Baxter and Hirschman
Izvestiya. Mathematics , Tome 1 (1967) no. 2, pp. 273-289.

Voir la notice de l'article provenant de la source Math-Net.Ru

In this work we consider a problem from the theory of Toeplitz forms first posed and solved by G. Szegö in 1952, and then solved under different conditions by a series of authors; in this work we indicate the solution to this problem of G. Szegö under more general conditions than those of the authors mentioned in the title. 
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Ya. L. Geronimus. On a problem of Szeg\"o, Kac, Baxter and Hirschman. Izvestiya. Mathematics , Tome 1 (1967) no. 2, pp. 273-289. http://geodesic.mathdoc.fr/item/IM2_1967_1_2_a4/

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