Pasqual, Moacir, et al. “Potassium Nitrate As Apple Cv. Golden Delicious (<i>Malus domestica< I>) Dormancy-Breaking Agent”. Pesquisa Agropecuaria Brasileira, vol. 13, no. 1, Apr. 2014, pp. 45-51, doi:10.1590/S1678-3921.pab1978.v13.16749.