Ader, J. P.Villani, A.2022-04-292022-04-291971-06-01Lettere Al Nuovo Cimento Series 2, v. 1, n. 24, p. 1006-1008, 1971.0375-930X1827-613Xhttp://hdl.handle.net/11449/2311521006-1008engA new rigorous constraint on the S and P waves for π-π scatteringArtigo10.1007/BF027702312-s2.0-51649176981