Reference

Gunther Greßmann, Flurin Filli, S. Campell, Andreas Duscher, Friedrich Reimoser, Ferdinand Lainer, Nikolaus Eisank (2009): Markus and Steff - Ibex Research in the Hohe Tauern National Park and the Swiss National Park – Nationalpark Hohe Tauern - Conference Volume – 4: 111 - 112.