S. J. Lenis-Manzano, A. C. G. de Araujo, C. B. do Valle, E. de F. Santana, and V. T. de C. Carneiro, “Histology of somatic embryogenesis induced in embryos of mature seeds of the apomictic Urochloa brizantha”, PAB, vol. 45, no. 5, pp. 435–441, Jan. 2011, doi: 10.1590/S1678-3921.pab2010.v45.3565.