R. Chakir and Y. Maday, Une méthode combinée d'éléments finis à deux grilles/bases réduites pour l'approximation des solutions d'une E.D.P. paramétrique, note aux CRAS, 2009.
DOI : 10.1016/j.crma.2009.02.019

M. Grepl, Y. Maday, N. Nguyen, and A. Patera, Efficient reduced-basis treatment of nonaffine and nonlinear partial differential equations, ESAIM: Mathematical Modelling and Numerical Analysis, vol.41, issue.3, pp.41575-41576, 2007.
DOI : 10.1051/m2an:2007031
URL : https://hal.archives-ouvertes.fr/hal-00112154

A. Kolmogoroff, Über die beste Annäherung von Funktionen einer gegebenen Funktionenklasse Anals of Math, pp.107-110, 1963.

Y. Maday, Reduced basis method for the rapid and reliable solution of partial differential equations, International Congress of Mathematicians, pp.1255-1270, 2006.
DOI : 10.4171/022-3/60
URL : https://hal.archives-ouvertes.fr/hal-00112152

A. Pinkus, n-Widths in Approximation Theory, 1985.
DOI : 10.1007/978-3-642-69894-1

C. Prud-'homme, D. Rovas, K. Veroy, L. Machiels, Y. Maday et al., Reliable real-time solution of parametrized partial differential equations: Reduced-basis output bound methods, J Fluids Engineering, vol.124, pp.70-71
URL : https://hal.archives-ouvertes.fr/hal-00798326