1. V. I. Gavrilov, V. S. Zakaryan, and A. V. Subbotin, “Linear Topological Properties of Maximal Hardy Spaces of Functions Harmonic in a Circle,” Dokl. NAN Armenii 102(3), 203–209 (2002).
2. E. D. Solomentsev, “Harmonic and Subharmonic Functions and Their Generalizations,” in Mathematical Analysis. Probability Theory. Control (Itogi Nauki, VINITI AN SSSR, 1964), pp. 83–100 [in Russian].
3. S. L. Berberyan and V. I. Gavrilov, “Limit Sets of Continuous and Harmonic Functions with Respect to Nontangent Boundary Paths,” Mathem.Montisnigri, No. 1, 17–25 (1993).
4. S. L. Berberyan, “The Distribution of Values of Harmonic Functions in the Unit Disk,” Izv. Vyssh. Uchebn. Zaved.Mat., No. 6, 12–19 (2011) [RussianMathematics (Iz. VUZ) 55 (6), 9–14 (2011)].
5. P. A. Lappan, “Fatou Points of Harmonic Normal Functions and Uniformly Normal Functions,” Math. Zeitschr. 102(2), 110–114 (1967).