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<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.0 20120330//EN" "JATS-journalpublishing1.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" article-type="research-article"><front><journal-meta><journal-id journal-id-type="publisher-id">INFORMATICA</journal-id><journal-title-group><journal-title>Informatica</journal-title></journal-title-group><issn pub-type="epub">0868-4952</issn><issn pub-type="ppub">0868-4952</issn><publisher><publisher-name>VU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">INF2407</article-id><article-id pub-id-type="doi">10.3233/INF-1991-2407</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research article</subject></subj-group></article-categories><title-group><article-title>A unified view on block and scalar impulse responses</article-title></title-group><contrib-group><contrib contrib-type="Author"><name><surname>Kazlauskas</surname><given-names>Kazys</given-names></name><xref ref-type="aff" rid="j_INFORMATICA_aff_000"/></contrib><aff id="j_INFORMATICA_aff_000">Institute of Mathematics and Informatics, Lithuanian Academy of Sciences, 2600 Vilnius, Akademijos St.4, Lithuania</aff></contrib-group><pub-date pub-type="epub"><day>01</day><month>01</month><year>1991</year></pub-date><volume>2</volume><issue>4</issue><fpage>552</fpage><lpage>563</lpage><abstract><p>The aim of this paper is to concentrate in one place and to show the relations among the matrix block impulse response, block impulse response, matrix impulse response and impulse response of linear time-varying (LTV) systems, frozen-time LTV systems, linear periodically time-varying (LPTV) systems, and linear time-invariant (LTI) systems.</p></abstract><kwd-group><label>Keywords</label><kwd>scalar impulse response</kwd><kwd>block impulse response</kwd><kwd>linear time-varying systems</kwd><kwd>linear periodically time-varying systems</kwd></kwd-group></article-meta></front></article>