1. F. G. Abdullayev and V. V. Andrievskii, “On the orthogonal polynomials in the domains withK-quasiconformal boundary,” Izv. Akad. Nauk Azerb. SSR, Ser. Fiz., Tech., Mat., No. 1, 3–7 (1983).
2. F. G. Abdullaev, "On some properties of orthogonal polynomials over an area in domains of the complex plane. I," Ukr. Mat. Zh., 52, No. 12, 1587-1595 (2000)
3. Ukr. Math. J., 52, No. 12, 1807-1817 (2000).
4. F. G. Abdullaev, "On some properties of orthogonal polynomials over an area in domains of the complex plane. II," Ukr. Mat. Zh., 53, No. 1, 3-13 (2001)
5. Ukr. Math. J., 53, No. 1, 1-14 (2001).