Abbar А. “$\Gamma$-Supercyclicity for Bilateral Shift Operators and Translation Semigroups”. BULLETIN OF THE L.N. GUMILYOV EURASIAN NATIONAL UNIVERSITY. Mathematics. Computer Science. Mechanics Series, vol. 129, no. 4, Dec. 2019, pp. 73-79, https://bulmathmc.enu.kz/index.php/main/article/view/55.