1. F. G. Abdullayev and V. V. Andrievskii, “On the orthogonal polynomials in the domains with K-quasiconformal boundary,” Izv. Akad. Nauk Azerb. SSR, Ser. Fiz., Tech., Mat., 4, No. 1, 7–11 (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. English translation: 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. III," Ukr. Mat. Zh., 53, No. 12, 1588-1599 (2001)
5. English translation: Ukr. Math. J., 53, No. 12, 1934-1948 (2001).