Quadrature formulas for rational functions. Rodriguez, F.Cala, Gonzalez-Vera, P., Paiz, M.Jimenez (1999) ETNA. Electronic Transactions on Numerical Analysis [electronic only]
Quasi-definiteness of generalized Uvarov transforms of moment functionals. Kim, D.H., Kwon, K.H. (2001) Journal of Applied Mathematics
Quasi-orthogonality on the unit circle and semi-classical forms. Alfaro, Manuel, Moral, Leandro (1994) Portugaliae Mathematica