Strebel D., Elberling B., Morgner E., Knicker H. E., and Cooper E. J. “Cold-Season Soil Respiration in Response to Grazing and Warming in High-Arctic Svalbard”. Polar Research, vol. 29, no. 1, Apr. 2010, pp. 46-57, doi:10.3402/polar.v29i1.6055.