Unigarro, C. A., C. P. Flórez, C. E. Oliveros, and M. Cañón. “Effects of Four Ethylene Inhibitors on the Ripening of Coffee (Coffea Arabica L.) Fruits During the Pre-Harvest Period”. Revista Colombiana De Ciencias Hortícolas, vol. 12, no. 2, Sept. 2018, pp. 500-7, doi:10.17584/rcch.2018v12i2.7667.