RT Journal Article T1 Unitarized chiral perturbation-theory for elastic pion-pion scattering A1 Dobado González, Antonio A1 Herrero, M. J. A1 Truong, T.N. PB Elsevier Science BV SN 0370-2693 YR 1990 FD 1990-01-25 LK https://hdl.handle.net/20.500.14352/58763 UL https://hdl.handle.net/20.500.14352/58763 DS Docta Complutense RD 15 may 2024