Authors: Terry C Daniel; Andreas Muhar; Arne Arnberger; Olivier Aznar; James W Boyd; Kai M A Chan; Robert Costanza; Thomas Elmqvist; Courtney G Flint; Paul H Gobster; Adrienne Grêt-Regamey; Rebecca Lave; Susanne Muhar; Marianne Penker; Robert G Ribe; Thomas Schauppenlehner; Thomas Sikor; Ihor Soloviy; Marja Spierenburg; Karolina Taczanowska; Jordan Tam; Andreas von der Dunk Journal: Proc Natl Acad Sci U S A Date: 2012-05-21 Impact factor: 11.205