1. Azencott, R. and Dacuhna-Castelle, D. (1986).Series of Irregular Observations, Springer-Verlag.
2. Bakonyi, M., Rodman, L., Spitkovsky, I., and Woerdeman, H.J. (1996). Positive extensions of matrix functions of two variables with support in an infinite band,C. R. Acad. Sci. Paris,323, 859?863.
3. Besikovitch, A.S. (1954).Almost Periodic Functions, Dover Publications.
4. Calderon, A. and Pepinsky, R. (1950). On the phases of Fourier coefficients for positive real periodic functions, inComputing Methods and the Phase Problem in X-Ray Crystal Analysis, Pepinsky, R., Ed., 339?346.
5. Castro, G. (1997). Coefficient de Réflexion Généralisés. Extension de Covariance Multidimensionelles et Autres Applications, Ph.D. Thesis, Université de Paris-Sud Centre d'Orsay.