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For this exceptional 25th anniversary of the QCD-Montpellier series ofconferences initiated in 85 with the name "Non-perturbative methods", we takethe opportunuity to celebrate the 30 + 1 years of the discovery of the SVZ(also called ITEP, QCD or QCD spectral) sum rules by M.A. Shifman, A.I.Vainshtein and V.I. Zakahrov in 79 [1]. In this talk, I have the duty topresent the status of the method. I shall (can) not enumerate the vast area ofsuccessful applications of sum rules in hadron physics but I shall focus on thehistorical evolution of field and its new developments. More detailed relateddiscussions and more complete references can be found in the textbooks [2,3].

SVZ sum rules : 30 + 1 years later