C. E. A. Carneiro, H. B. C. Molinari, G. A. Andrade, L. F. P. Pereira, and L. G. E. Vieira, “Proline production by transgenic plants of Swingle citrumelo and susceptibility to glufosinate ammonium”, PAB, vol. 41, no. 5, pp. 747–753, May 2006, doi: 10.1590/S1678-3921.pab2006.v41.7202.