Perez Padrón, J., J. Pérez Padrón, C. Mendez-Barrios, and E. Gonzalez-Galvan. “Trajectory Tracking Error Using Fractional Order Time-Delay Recurrent Neural Networks Using Krasovskii-Lur’e Functional for Chua’s Circuit via Inverse Optimal Control”. Revista Mexicana De Física, vol. 66, no. 1 Jan-Feb, Dec. 2019, pp. 98-104, doi:10.31349/RevMexFis.66.98.