Moura, Waldênia de Melo, et al. “Genetic Divergence of Phosphorus Nutritional Efficiency in Sweet Pepper Lines”. Pesquisa Agropecuaria Brasileira, vol. 34, no. 2, Feb. 1999, pp. 217-24, doi:10.1590/S1678-3921.pab1999.v34.5172.