<ul><li><a href=https://cdn1.a1.group/final/de/media/pdf/Satzung_Telekom_Austria_AG.pdf target=_blank>Articles of Association of Telecom Austria(Satzung der Telekom Austria Aktiengesellschaft par.17   )</a></li><li><a href=https://cdn1.a1.group/final/en/media/pdf/A1_TAG-Yearly%20financial%20report%202021.pdf target=_blank>Annual financial report of A1 Telekom Austria Group(Annual financial report of A1 Telekom Austria Group, p. 23)</a></li><li><a href=https://www.oebag.gv.at/en/organisation/portfolio/ target=_blank>Österreichische Beteiligungs AG (ÖBAG)</a></li></ul>