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      On characterizations of classical polynomials 

      Álvarez Nodarse, Renato (Elsevier, 2006-11-01)
      It is well known that the classical families of Jacobi, Laguerre, Hermite, and Bessel polynomials are characterized as ...
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      On the q-polynomials on the exponential lattice x(s)= c 1 qs + c 3 

      Álvarez Nodarse, Renato; Arvesú Carballo, Jorge (Taylor & Francis, 1999)
      The main goal of this paper is to continue the study of the q-polynomials on non-uniform lattices by using the approach ...
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      Recurrence relations for discrete hypergeometric functions 

      Álvarez Nodarse, Renato; Santos Cardoso, José Luis dos (Taylor & Francis, 2005)
      We present a general procedure for finding linear recurrence relations for the solutions of the second order difference equation of hypergeometric type. Applications to wave functions of certain discrete system are also given.