Raven, J. A.; Edwards, D. (2001). «Roots: evolutionary origins and biogeochemical significance». Journal of Experimental Botany52 (90001): 381-401. PMID11326045. doi:10.1093/jexbot/52.suppl_1.381.
Raven, J. A.; Edwards, D. (2001). «Roots: evolutionary origins and biogeochemical significance». Journal of Experimental Botany52 (90001): 381-401. PMID11326045. doi:10.1093/jexbot/52.suppl_1.381.