V. M. Bibliographie, D. Z. Adamyan, M. G. Arov, and . Krein, Infinite Hankel matrices and generalized Carathéodory-Fejér and Riesz problems, Funt. Anal. Appl, vol.2, pp.1-18, 1968.

D. Alpay, L. Baratchart, and J. Leblond, Hardy approximation in L p functions of an arc, 1993.

D. Alpay, L. Baratchart, and J. Leblond, Some extremal problems linked with identification from partial frequency data, 10th conference pn analysis and optimization of systems, pp.563-573, 1993.
DOI : 10.1007/bfb0115054

D. Alpay and J. Leblond, Loewner Interpolation in Matrix Hardy Classes, Zeitschrift f??r Analysis und ihre Anwendungen, vol.14, issue.2, 1995.
DOI : 10.4171/ZAA/672

K. I. Babenko, An inequality in the theory of Fourier integrals, Amer Math. Soc. Transi, vol.44, issue.2, pp.115-128, 1961.
DOI : 10.1090/trans2/044/07

E. W. Bai and S. Raman, A linear interpolatory algorithm for robust system identification with corrupted measurement data, IEEE Transactions on Automatic Control, vol.38, issue.8, pp.1236-1241, 1993.
DOI : 10.1109/9.233158

L. Baratchart, Sur l'approximation rationnelle L 2 pour les systèmes dynamiques linéaires. Doctorat d'état en mathématiques

L. Baratchart and J. Leblond, Robust identification from partial frequency data, Proceedings of 1994 33rd IEEE Conference on Decision and Control, 1993.
DOI : 10.1109/CDC.1994.411777

L. Baratchart, J. Leblond, and J. R. Partington, Best bounded H x extension of partial frequency data, in preparation, 1995.

L. Baratchart, J. Leblond, and J. R. Partington, Hardy Approximation to $L^$ Functions on Subsets of the Circle, Constructive Approximation, vol.12, issue.3, 1994.
DOI : 10.1007/s003659900022
URL : https://hal.archives-ouvertes.fr/inria-00074299

L. Baratchart, J. Leblond, J. R. Partington, and N. Torkbani, Robust identification in the disc algebra from band-limited data, 1995.
URL : https://hal.archives-ouvertes.fr/inria-00074187

L. Baratchart, J. Leblond, and N. Torkhani, Best bounded H 2 completion of partial frequency data, Proc. of the 3rd European Control Conference, pp.1330-1335, 1995.

B. Beauzamy, Introduction to Banach Spaces and their Geometry, North-Hollande Mathematics Studies, vol.68, 1985.

W. Beckner15j, C. Bennett, and R. Sharpley, Inequalities in Fourier Analysis, 18] M. Cardelli. Contribution à l'approximation rationnelle L 2 des fonctions de transfert, pp.159-182, 1975.
DOI : 10.2307/1970980

L. Carleson and S. Jacobs, Best uniform approximation by analytic functions. Arkiv for matemaük, pp.219-229, 1972.
DOI : 10.1007/bf02384810

E. W. Cheney, Introduction to Approximation Theory, 1982.

C. Chui and G. Chen, Linear Systems and Optimal Control, 1989.
DOI : 10.1007/978-3-642-61312-8

J. C. Doyle, B. A. Francis, and A. R. Tannenbaum, Feedback control theory, 1992.

P. L. Duren, Theory of H p Spaces, 1970.

R. E. Edwards, Fourier Series: A Modern Introduction Volume I. Second Edition, 1979.

P. Faure and M. Robin, Éléments d'automatique. Dunod, 1984.

P. Fulcheri, Identification and matrix rational H 2 approximation, 1995.
URL : https://hal.archives-ouvertes.fr/inria-00074158

J. B. Garnett, Bounded analytic functions, 1981.

K. Glover, -error bounds???, International Journal of Control, vol.127, issue.6, pp.1115-1193, 1984.
DOI : 10.1109/TIT.1961.1057636
URL : https://hal.archives-ouvertes.fr/in2p3-00956389

K. Glover, J. Lam, and J. R. Partington, Rational approximation of a class of infinite-dimensional systems I: Singular values of hankel operators, Mathematics of Control, Signals, and Systems, vol.10, issue.4, pp.325-344, 1990.
DOI : 10.1007/BF02551374

G. Gu and P. P. Khargonekar, A class of algorithms for identification in H???, Automatica, vol.28, issue.2, pp.299-312, 1992.
DOI : 10.1016/0005-1098(92)90117-X

G. Gu and P. P. Khargonekar, Linear and nonlinear algorithms for identification in H/sub infinity / with error bounds, IEEE Transactions on Automatic Control, vol.37, issue.7, pp.953-963, 1992.
DOI : 10.1109/9.148347

E. J. Hannan and M. Deistler, The Statistical Theory of LINEAR SYSTEMS, 1988.

E. Hayashi, L. N. Trefethen, and M. H. Gutknecht, The CF table, Constructive Approximation, vol.20, issue.2, pp.195-223, 1990.
DOI : 10.1007/BF01889358

A. J. Helmicki, C. Jacobson, and C. N. Nett, Hoo Identification of Stable LSI Systems: A scheme with Direct Application to Controller Design, Proceedings of the American Control Conference, 1989.

A. J. Helmicki, C. Jacobson, and C. N. Nett, Identification in Hoo : A Robustly Convergent, Nonlinear Algorithm, Proceedings of the American Control Conference, 1990.

A. J. Helmicki, C. Jacobson, and C. N. Nett, Identification in Hoo : The continuous-time case, Proceedings of the American Control Conference, pp.1893-1898, 1990.

A. J. Helmicki, C. Jacobson, and C. N. Nett, Control oriented system identification: a worst-case/deterministic approach in H/sub infinity /, IEEE Transactions on Automatic Control, vol.36, issue.10, pp.1163-1176, 1991.
DOI : 10.1109/9.90229

J. W. Helton and F. Schwartz, The best approximation to a vector-valued continuous function from the bounded analytic functions, preprint, 1987.

P. Henrici, Applied and computational complex analysis, volume 3. A Wiely-interscience publication, 1985.

K. Hoffman, Banach spaces of analytic functions, 1988.

T. Kailath, Linear Systems, 1980.

R. E. Kaiman, Algebraic aspects of the theory of dynamical systems "in Dynamical Equations and Dynamical Systems, 1967.

P. Koosis, Introduction to H p spaces, 1988.

S. Lang, Differential manifolds, 1972.
DOI : 10.1007/978-1-4684-0265-0

P. Lascaux and R. Theodor, Analyse numérique matricielle appliquée à l'art de l'ingénieur : Tomes 1 et 2, 1986.

J. Leblond and M. Olivi, Approximation pondérée de fonctions de transfert scalaires, preprint, 1994.

L. Ljung, System Identification: Theory for the User, 1987.

G. G. Lorentz, Approximation of functions, 1986.

N. Maïzi, Réduction au sens de la norme de Hankel de modèles dynamiques de dimension infinie, 1992.

P. M. Mäkilä and J. R. Partington, Robust approximation and identification in H°°, Proceedings of the American Control Conference, pp.70-76, 1992.

M. Marden, Geometry of Polynomials, 1989.
DOI : 10.1090/surv/003

P. Miaou and P. Safir, Rapport final d'exécution de la commande 962/293/0588, 1994.

J. R. Partington, Robust identification in H???, Journal of Mathematical Analysis and Applications, vol.166, issue.2, p.428441, 1992.
DOI : 10.1016/0022-247X(92)90308-Z

J. R. Partington, with unequally spaced function measurements, International Journal of Control, vol.58, issue.1, pp.21-31, 1993.
DOI : 10.1080/00207179108934210

J. R. Partington, An Introduction to Hankel Operators, 1988.
DOI : 10.1017/CBO9780511623769

V. V. Peller, Hankel operators and continuity properties of operators of best approximation, Leningrad Math. J, vol.2, issue.1, pp.139-160, 1991.

V. V. Peller, Boundedness properties of the operators of best approximation by analytic and meromorphic functions, Arkiv f??r Matematik, vol.30, issue.1-2, pp.331-343, 1992.
DOI : 10.1007/BF02384879

L. Povy, Identification des processus. Dunod université, 1975.

M. J. Powell, Approximation theory and methods, 1981.

S. C. Power, Hankel Operators on Hubert Spaces. Pitman advanced publishing program, 1982.

T. J. Rivlin, An Introduction to the Approximation of Functions, 1981.

M. Rosenblum and J. Rovnyak, Restrictions of analytic functions. II, Proceedings of the American Mathematical Society, pp.335-343, 1975.
DOI : 10.1090/S0002-9939-1975-0399925-0

M. Rosenblum and J. Rovnyak, Hardy Classes and Operator Theory, Oxford Mathematical Monographs, 1985.

W. Rudin, Real and complex analysis, 1982.

F. Seyfert, Contribution à l'identification fréquentielle dans H p pour 1 < p < oo, 1997.

T. Söderström and P. Stoica, System Identification, Journal of Dynamic Systems, Measurement, and Control, vol.115, issue.4, 1989.
DOI : 10.1115/1.2899207

E. D. Sontag, Mathematical Control Theory: Deterministic Finite Dimensional Systems, 1990.

N. Torkhani, Interpolation et identification robustes dans iî 00 sur la connection machine cm200, 1995.

N. Torkhani, Robust interpolation and approximation for A(B) functions on subsets of the circle, in preparation, 1995.

M. Vidyasagai, Control System Synthesis. The MIT Ppress, 1987.

N. F. Dudley, J. R. Ward, and . Partington, Robust Identification in the Disc Algebra using Rational Wavelets and Orthogonal Basis Functions, 1995.

C. Van and . Winter, Fredholm equations on a Hubert space of analytic functions, Trans. Amer. Math. Soc, vol.162, pp.103-1390, 1971.

M. Wonham, Linear Multivariable Control, 1974.

N. J. Young, An introduction to Hilbert space, 1988.
DOI : 10.1017/CBO9781139172011

L. A. Zadeh, From Circuit Theory to System Theory, Proceedings of the IRE, vol.50, issue.5, pp.856-865, 1962.
DOI : 10.1109/JRPROC.1962.288302

E. Zeidler, Nonlinear Functional Analysis and its Applications, 1986.
DOI : 10.1007/978-1-4612-0985-0

A. Zygmund, Trigonometric series, 1959.