A priori convergence of the Greedy algorithm for the parametrized reduced basis methodAnnalisa Buffa, Yvon Maday, Anthony T. Patera, Christophe Prud’homme and Gabriel TuriniciESAIM: M2AN, 46 3 (2012) 595-603DOI: https://doi.org/10.1051/m2an/2011056