P. de S. Gonçalves, J. R. de Paiva, and A. P. Rebello, “‘In vitro’ pollen germination of Hevea camargoana”, PAB, vol. 17, no. 2, pp. 287–291, Apr. 2014, doi: 10.1590/S1678-3921.pab1982.v17.15626.