1. Influence de l'intensité de l'éclairement de la plante sur la fixation non symbiotique d'azote dans la rhizosphère;Balandreau;Oecol. Plant.,1971
2. The influence of the microflora on the accumulation of ions by plants;Barber,1969
3. The quantitative relationship between nitrogen fixation and the acetylene-reduction assay;Bergersen;Aust. J. biol. Sci.,1970
4. Non-symbiotic nitrogen fixation in tropical soils;Döbereiner;Pesq. agropec. Bras.,1968
5. Nitrogenase activity of the Paspalum notatum-Azotobacter paspali association and oxygen sensitivity;Döbereiner;J. gen. Microbiol.,1971