La variabilité des milieux, Une réalité : de la région à la plante, Perspectives agricoles, pp.8-9, 1997. ,
An investigation into the relationship between yield maps, soil variation and crop development in the UK. Precision agriculture, Proceedings of the 3rd International Conference, pp.433-442, 1996. ,
Consistency and change in spatial variability of crop yield over successive seasons : methods of data analysis. Precision agriculture, Proceedings of the 3rd International Conference, pp.141-149, 1996. ,
GPS, Un moyen de se localiser dans la parcelle, Perspectives agricoles, pp.26-31, 1997. ,
Accuracies of grain and straw yield maps, Ag ENG paper 96 G-009, International Conference, pp.23-26, 1996. ,