I want to find reference of Waldspurger's paper *"Sur les coefficients de Fourier des formes modulaires de poids demi-entier"* the name of ref. is [W] J.L Waldspurger, Correspondance de Shimura (J. Math. pures et appl., n 60, 1980, p.1-132). Is there anyone who has the ref.? and I don't know the definition of Hecke algebra of metaplectic group SL(2,A)*{1,-1} There are many senses of Hecke algebra but I don't know in the context of that paper (*"Sur les coefficients de Fourier des formes modulaires de poids demi-entier"* )