Wittmer MHOM, Auerswald K, Tungalag R, Bai YF, Schäufele R, Schnyder H (2008) Carbon isotope discrimination of C3 vegetation in Central Asian grassland as related to long-term and short-term precipitaion patterns, Biogeosciences, 5, 913-924.

Auerswald K, Wittmer MHOM, Männel TT, Bai YF, Schäufele R, Schnyder H (2009) Large regional scale variation in C3/C4 distribution pattern of Inner Mongolia steppe is revealed by grazer wool carbon isotope composition, Biogeosciences, 6, 795-805.

Wittmer MHOM, Auerswald K, Bai YF, Schäufele R, Schnyder H (2009) Changes in the abundance of C3/C4 species in Inner Mongolian grassland: Evidence from carbon isotope composition of soil and vegetation, Global Change Biology, doi: 10.1111/j.365-2486.2009.02033.x

Auerswald K, Wittmer MHOM,Zazzo A, Schäufele R, Schnyder H (2009) Biases in the analysis of stable isotope discrimination in food webs, Journal of Applied Ecology, accepted

Wittmer MHOM, Auerswald K, Schönbach P, et al. (2009) Do grazer hair and faeces reflect the carbon isotope composition of semi-arid C3/C4 grasslands? Basic and Applied Ecology, accepted