%0 Journal Article %A Haji Shaabani, M., Fatehi, M., Farzi Haromi, M. %T Spectrum and essential spectrum of linear combinations of composition operators on the Hardy space H2 %J Journal of New Researches in Mathematics %V 5 %N 2 %P 5-14 %D 2019 %R %U https://sanad.iau.ir/fa/Article/798701