P. R. Castro, M. B. Gonçalves, and C. G. Demétrio, “ Effects of plant regulators on germination of seeds ”, An. Esc. Super. Agr. Luiz de Queiroz, vol. 42, no. 2, pp. 449–467, Jan. 1985, doi: 10.1590/S0071-12761985000200009.