[1]
W. R. de Azevedo, V. Faquin, F. M. de S. Moreira, A. C. de O. Júnior, and C. C. Lisboa, “Boron effects on nodule development in pea plants cultivated in lowland soils”, PAB, vol. 37, no. 8, pp. 1137–1143, Aug. 2002.