Sakanushi, T., Yamada, K., Ando, Y., Matsuura, S. and Hu, J. (2011) “A Design Method for Simple Repetitive Controllers for Multiple-Input/Multiple-Output Time-Delay Plants”, ECTI Transactions on Electrical Engineering, Electronics, and Communications, 10(1), pp. 48–58. doi: 10.37936/ecti-eec.2012101.170457.