Historically unprecedented global glacier changes in the early 21st Century
Zemp, M; H Frey; I Gärtner-Roer; SU Nussbaumer; M Hoelzle; F Paul; W Haeberli; F Denzinger; AP Ahlstrøm; B Anderson; M Arenillas; S Bajracharya; C Baroni; WR Bidlake; LN Braun; BE Cáceres; G Casassa; et al.