@article{TUW-231924, author = {Jadachowski, Lukas and Meurer, Thomas and Kugi, Andreas}, title = {Backstepping Observers for linear PDEs on Higher-Dimensional Spatial Domains}, journal = {Automatica}, year = {2015}, volume = {51}, pages = {85--97}, doi = {10.1016/j.automatica.2014.10.108} }