Steinar Saelid. Observability theorems for some linear hyperbolic systems. Automatica, 14(5):499-503, 1978. [doi]
@article{Saelid78,
title = {Observability theorems for some linear hyperbolic systems},
author = {Steinar Saelid},
year = {1978},
doi = {10.1016/0005-1098(78)90009-2},
url = {http://dx.doi.org/10.1016/0005-1098(78)90009-2},
researchr = {https://researchr.org/publication/Saelid78},
cites = {0},
citedby = {0},
journal = {Automatica},
volume = {14},
number = {5},
pages = {499-503},
}