1. The effects of radiation and nitrogen on number of grains in wheat;Abbate;J. Agric. Sci., Camb.,1995
2. Aubry, C., 1995. Gestion de la sole d’une culture dans l’exploitation agricole. Cas du blé d’hiver en grande culture dans la région picarde. Thèse de Doctorat de l’INA PG, Paris, 277 pp.
3. Growth analysis of a tall fescue sward fertilized with different rates of nitrogen;Bélanger;Crop Sci.,1992
4. David, C., 1997. Nitrogen management in organic farming: nutrient requirement and fertilization efficiency of winter wheat. In: Proceedings of the 11th World Fertilizer Congress of CIEC Fertilization, Gent, September 7–13, 1997. Gent University and International Scientific Center of Fertilizers, pp. 647–660.
5. Spike dry matter and nitrogen accumulation before anthesis in wheat as affected by nitrogen fertilizer: relationship to kernels per spike;Demotes-Mainard;Field Crops Res.,1999