Urbanek, E., Smucker, A. J., & Horn, R. (2011). Total and fresh organic carbon distribution in aggregate size classes and single aggregate regions using natural 13C/12C tracer. Geoderma, 164(3-4), pp. 164-171. doi:10.1016/j.geoderma.2011.05.020

Urbanek, Emilia, Alvin J.M Smucker, and Rainer Horn. "Total and Fresh Organic Carbon Distribution in Aggregate Size Classes and Single Aggregate Regions Using Natural 13C/12C Tracer." Geoderma 164, no. 3-4 (2011): 164-171.

Urbanek, Emilia, Alvin J.M Smucker, and Rainer Horn. "Total and Fresh Organic Carbon Distribution in Aggregate Size Classes and Single Aggregate Regions Using Natural 13C/12C Tracer." Geoderma 164.3-4 (2011): 164-171.