“ Effects of a plant stimulant on the yield of chillies (Capsicum annuum L.) and eggplant (Solarium melongena L.) ”, An. Esc. Super. Agr. Luiz de Queiroz, vol. 39, nº 1, p. 287–304, jan. 1982, doi: 10.1590/S0071-12761982000100019.