Gerardo Escobar, Michael Hernandez-Gomez, Andres A. Valdez-Fernandez, Manuel J. Lopez-Sanchez, Glendy A. Catzin-Contreras. Implementation of a $6n \pm 1$ Repetitive Controller Subject to Fractional Delays. IEEE Transactions on Industrial Electronics, 62(1):444-452, 2015. [doi]
Abstract is missing.