@article {679, title = {Cooperative observers and regulators for discrete-time multiagent systems}, journal = {International Journal of Robust and Nonlinear Control}, volume = {23}, year = {2012}, month = {09/2013}, pages = {1545 - 1562}, doi = {10.1002/rnc.2840}, author = {Hengster-Movric, Kristian and Lewis, Frank} }