Rodríguez-Delfín, A., A. de J. López-Herrera, V. Rojas-Rojas, and B. F. García-Galindo. “Yield Evaluation of Lettuce Grown in Three Modified NFT Systems in Pandemic Times”. Current Topics in Agronomic Science, vol. 2, no. 1, June 2022, pp. 1-9, doi:10.5154/r.ctasci.2021.11.06a.