Holocene high-altitude vegetation dynamics on Emi Koussi, Tibesti Mountains (Chad, Central Sahara) - Dinies, Michèle; Schimmel, Lena; Hoelzmann, Philipp; Kröpelin, Stefan; Darius, Frank; Neef, Reinder (A Balkema Book, CRC Press, an imprint of the Taylor & Francis Group, an informa business, 2021)