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But the common approach of reduction to systems of Wiener\u2010Hopf equations is avoided by a more direct factorization scheme. The main results are: Fredholm criteria, analytical representation of generalized inverses, and the constructive solution of normalization problems. (\u00a9 2004 WILEY\u2010VCH Verlag GmbH &amp; Co. KGaA, Weinheim)<\/jats:p>","DOI":"10.1002\/mana.200310166","type":"journal-article","created":{"date-parts":[[2004,5,6]],"date-time":"2004-05-06T16:03:08Z","timestamp":1083859388000},"page":"73-85","source":"Crossref","is-referenced-by-count":10,"title":["A direct approach to convolution type operators with symmetry"],"prefix":"10.1002","volume":"269-270","author":[{"given":"L. P.","family":"Castro","sequence":"first","affiliation":[]},{"given":"F.\u2010O.","family":"Speck","sequence":"additional","affiliation":[]},{"given":"F. 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