@article{IJAMCS_2021_31_4_a5,
     author = {Emirsaj{\l}ow, Zbigniew},
     title = {Discrete-time output observers for boundary control systems},
     journal = {International Journal of Applied Mathematics and Computer Science},
     pages = {613--626},
     publisher = {mathdoc},
     volume = {31},
     number = {4},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IJAMCS_2021_31_4_a5/}
}