Owing to errors made by the authors, Yuanzhe Wang and Hongjie Hu, the article is incorrect:

Wang Y, Hu H. Pseudo distributed optimal state estimation for a class of networked systems, Transactions of the Institute of Measurement and Control, 37 (10) 1232-1241, doi: 10.1177/0142331214560804

The authors apologise to the readers. The following corrections apply:

An acknowledgement should be included, as follows:

Dr Yuanzhe Wang completed the work for this paper while working with Prof. Tong Zhou’s group at Tsinghua University in 2013. For their contributions to the research behind this article, Dr Wang would like to acknowledge Professor Tong Zhou and his group.