Guerrero, E. M., Revelo, J. C., Benavides B., O., Chaves J., G., & Moncayo, C. Álvaro. (2014). Evaluation of substrates in a hydroponic lettuce culture system in the municipality of Pasto. Revista De Ciencias Agrícolas, 31(1), 3–16. https://doi.org/10.22267/rcia.143101.38