1. Armitage D. H., Universal Overconvergence of polynomial expansions of harmonic functions, J. Approx. Theory, 118 (2002), 225-234.

2. Klimek M., Pluripotential Theory, Oxford University Press, 1991.

3. Luh W., Universal approximation properties of overconvergent power series on open sets,Analysis, 6 (1986), 191-207.

4. Manolaki M., Ostrowski-type theorems for harmonic functions, J. Math. Anal. Appl., 391 (2012), 480-488.

5. Manolaki M., Universal polynomial expansions of harmonic functions, Potential Anal., 38 (2013), 985-1000.

6. Muller J.,Yavrian A., On polynomial sequences with restricted growth near infinity, Bull. Lond. Math. Soc., 34 (2002), 189-199.

7. Siciak J., Extremal plurisubharmonic functions and capacities in CN, Sophia Kokyuroku in Mathematics, 14. Tokyo: Sophia University, Department of Mathematics (1982), 1-97.

8. Siciak J., Sets in CN with vanishing global extremal function and polynomial approximation, Ann. Fac. Sci. Toulouse Math., 20 (2011), Fascicule Special, 189-209.

9. Siciak J., Some gap power series in multidimesional setting, Ann. Univ. Mariae Curie-Skłodowska, 65 (2011), 179-190.

10. Stout E. L., Polynomial Convexity, Birkhauser, Boston, Basel, Berlin, 2007.