1. Agreste, 2013. Picardie-Recensement agricole 2010. Les grandes cultures en Picardie. Agreste Picardie −Les feuilles de liaisons, n(47. http://draaf.hauts-de-france.agriculture.gouv.fr/IMG/pdf/Picardie_-_grandes_-_cultures_cle87e713.pdf (Accessed: January 2016).
2. Agreste, 2014. Website of Agreste, http://www.agreste.agriculture.gouv.fr (Accessed: December 2014).
3. A decision support system based on farmers' knowledge to assess him in decision-making about work organization and long term evolution;Attonaty,1993
4. The effects of sowing date and nitrogen availability during vegetative stages on Leptosphaeria maculans development on Winter OilSeed Rape;Aubertot;Crop Prot.,2004
5. Improved resistance management for durable disease control: a case study of phoma stem canker of oilseed rape (Brassica napus);Aubertot;Eur. J. Plant Pathol.,2006