Buitrago, Sebastián, et al. “Symptoms and Growth Components of Feijoa (Acca Sellowiana [O. Berg] Burret) Plants in Response to the Missing Elements N, P, and K”. Revista Colombiana De Ciencias Hortícolas, vol. 15, no. 3, Aug. 2021, p. e13159, doi:10.17584/rcch.2021v15i3.13159.