Media type: E-Article Title: Energy-efficient RRH-association and resource allocation in D2D enabled multi-tier 5G C-RAN Contributor: Ali, Sher; Ahmad, Ayaz; Faheem, Yasir; Altaf, Muhammad; Ullah, Habib Published: Springer Science and Business Media LLC, 2020 Published in: Telecommunication Systems, 74 (2020) 2, Seite 129-143 Language: English DOI: 10.1007/s11235-019-00643-y ISSN: 1018-4864; 1572-9451 Origination: Footnote: