@article{1c34b2f7f3da4336a5d8cc4e269af880,
title = "A note on persistency of excitation",
keywords = "bahavioral systems, persistency of excitation, lags, annihilators, system identification, TIME-INVARIANT SYSTEMS, LINEAR-SYSTEM, IDENTIFICATION",
author = "JC Willems and P Rapisarda and Markovsky and {De Moor}, BLM",
year = "2005",
month = apr,
doi = "10.1016/j.sysconle.2004.09.003",
language = "English",
volume = "54",
pages = "325--329",
journal = "Systems & Control Letters",
issn = "0167-6911",
publisher = "Elsevier Science",
number = "4",
}