Álvarez Nodarse, RenatoArvesú Carballo, JorgeMarcellán Español, Francisco José2009-12-072009-12-072004Journal of Applied Mathematics, 2004, vol. 2004, n. 5, p. 359-3691110-757Xhttps://hdl.handle.net/10016/596811 pages, no figures.-- MSC2000 codes: 33C45, 42C05, 33C47, 47A06.MR#: MR2108368 (2005m:33012)Zbl#: Zbl 1080.33008Using a general and simple algebraic approach, some results on Krall-type orthogonal polynomials and some of their extensions are obtained.application/pdfeng© Hindawiresearch articleMatemáticas10.1155/S1110757X04312076open access