C. Ritter

Precision farming for weed management: techniques

R. Gerhards, M. Weis, C. Gutjahr, 2008, Gesunde Pflanzen.

An on-farm approach to quantify yield variation and to derive decision rules for site-specific weed management

R. Gerhards, H. Piepho, R. Gerhards, 2008, Precision Agriculture.