Geodesic
Necessary and sufficient conditions for the existence of boundary values of the modulus of a function that is bounded and analytic in a half-plane
Izvestiya. Mathematics, Tome 25 (1985) no. 1, pp. 89-114 
A. P. Mul. Necessary and sufficient conditions for the existence of boundary values of the modulus of a function that is bounded and analytic in a half-plane. Izvestiya. Mathematics, Tome 25 (1985) no. 1, pp. 89-114. http://geodesic.mathdoc.fr/item/IM2_1985_25_1_a5/
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Voir la notice de l'article provenant de la source Math-Net.Ru

Necessary and sufficient conditions are obtained for the existence of a nontangential limit and of a limit along the normal at a particular point of the boundary for the modulus of a function that is bounded and analytic in a half-plane; the conditions consist in the existence at this point of the derivative and of the symmetric derivative, respectively, of the mass distribution function. Bibliography: 14 titles

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[11] Goluzin G. M., Geometricheskaya teoriya funktsii kompleksnogo peremennogo, Nauka, M., 1966 | MR

[12] Govorov N. V., “Ob indikatore funktsii netselogo poryadka, analiticheskikh i vpolne regulyarnogo rosta v poluploskosti”, Dokl. AN SSSR, 162:3 (1965), 495–498 | MR | Zbl

[13] Govorov N. V., “Ob indikatore funktsii tselogo poryadka, analiticheskikh i vpolne regulyarnogo rosta v poluploskosti”, Dokl. AN SSSR, 172:14 (1967), 763–766 | MR | Zbl

[14] Grishin A. F., “O funktsiyakh, golomorfnykh vnutri ugla, imeyuschikh tam nulevoi poryadok”, Teoriya funktsii, funkts. analiz i ikh prilozheniya, 1965, no. 1, 41–56 | Zbl