@article{SINGH_1975,
    title = {Observability in non-linear systems with immeasurable inputs},
    volume = {6},
    issn = {1464-5319},
    url = {http://dx.doi.org/10.1080/00207727508941856},
    doi = {10.1080/00207727508941856},
    number = {8},
    journal = {International Journal of Systems Science},
    publisher = {Informa UK Limited},
    author = {Singh, Sahjendra N.},
    year = {1975},
    month = {aug},
    pages = {723–732},
    date-added = {2026-3-27 14:51:21 +0100}
}

@article{SINGH_1975, title = {Observability in non-linear systems with immeasurable inputs}, volume = {6}, issn = {1464-5319}, url = {http://dx.doi.org/10.1080/00207727508941856}, doi = {10.1080/00207727508941856}, number = {8}, journal = {International Journal of Systems Science}, publisher = {Informa UK Limited}, author = {Singh, Sahjendra N.}, year = {1975}, month = {aug}, pages = {723–732}, date-added = {2026-3-27 14:51:21 +0100} }