Sollins, Phillip; Swanston, Christopher; Kleber, Markus; Filley, Timothy; Kramer, Marc; Crow, Susan; Caldwell, Bruce A.; Lajtha, Kate; Bowden, Richard. 2006. Organic C and N stabilization in a forest soil: evidence from sequential density fractionation. Soil Biology and Biochemistry. 38: 3313-3324.