@inproceedings{inproceedings31bf5a44,
title   = {Chiral symmetry and pion-nucleon scattering},
author = {Pupin, J C and Robilotta, Manoel Roberto},
year = {1995},
publisher = {Centro Brasileiro de Pesquisas Fisicas},
booktitle   = {Reuniao de Trabalho sobre Interacoes Hadronicas}
}