S. H. Anderson ANDERSON, S. H., & CASSEL, D. K. (1984). EFFECT OF SOIL VARIABILITY ON RESPONSE TO TILLAGE OF AN ATLANTIC COASTAL-PLAIN ULTISOL. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 48(6), 1411–1416. https://doi.org/10.2136/sssaj1984.03615995004800060042x