{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,4]],"date-time":"2026-06-04T23:12:56Z","timestamp":1780614776454,"version":"3.54.1"},"reference-count":36,"publisher":"University of Zielona G\u00f3ra, Poland","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2008,6,1]]},"abstract":"<jats:title>Controllability and Observability of Linear Discrete-Time Fractional-Order Systems<\/jats:title><jats:p>In this paper we extend some basic results on the controllability and observability of linear discrete-time fractional-order systems. For both of these fundamental structural properties we establish some new concepts inherent to fractional-order systems and we develop new analytical methods for checking these properties. Numerical examples are presented to illustrate the theoretical results.<\/jats:p>","DOI":"10.2478\/v10006-008-0019-6","type":"journal-article","created":{"date-parts":[[2008,6,26]],"date-time":"2008-06-26T01:06:32Z","timestamp":1214442392000},"page":"213-222","source":"Crossref","is-referenced-by-count":70,"title":["Controllability and Observability of Linear Discrete-Time Fractional-Order Systems"],"prefix":"10.61822","volume":"18","author":[{"given":"Said","family":"Guermah","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Said","family":"Djennoune","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maamar","family":"Bettayeb","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"37438","reference":[{"key":"1","author":"P. 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