Gravina, A., et al. “Study on the Flowering of ‘Ellendale’ Tangor (Citrus Sinensis L. Osb. X C. Reticulata) Bl. And Its Relationship With Fruit Se and Productivity”. Agrociencia Uruguay, vol. 1, no. 1, June 1997, pp. 55-59, doi:10.31285/AGRO.01.1084.