Asymptotic properties and Fourier expansions of orthogonal polynomials with a non-discrete Gegenbauer-Sobolev inner product. - Bujar Xh. Fejzullahu (J. Approx. Theory, 2010)

Jacobi-Sobolev orthogonal polynomials: Asymptotics and a Cohen type inequality. - Bujar Xh. Fejzullahu; Francisco Marcellán; Juan J. Moreno-Balcázar (J. Approx. Theory, 2013)