Mountain area rehabilitation (BGS)
Conservation and management of natural resources in rural areas
Heiner Schlegel
Natural History Research in the Principality of Liechtenstein, Volume 8, Vaduz 1987
out of print as a book
Development and conservation concept for the mountain region
Development concept working group, Vaduz 2000
Sheep summering in the Principality of Liechtenstein
Ecological principles
Franz Stadler, Vaduz 2003
Dealing with our mountain area
40 years of integral mountain area rehabilitation (BGS)
Stefan Wohlwend
Office for Forests, Nature and Landscape, August 2011
