Chen, Zhongxiang, Tatsuya Sakanushi, Kou Yamada, Satoshi Tohnai, and Yun Zhao. 2016. “A Design Method for a Robust Stabilizing Multi-Period Repetitive Control System for Multiple-Input/Multiple-Output Plants With Specied Input-Output Frequency Characteristic Using the Parameterization”. ECTI Transactions on Computer and Information Technology (ECTI-CIT) 7 (1):21-31. https://doi.org/10.37936/ecti-cit.201371.54349.