@article{articlece48b3d6,
title   = {(Non)linear instability of periodic traveling waves: Klein–Gordon and KdV type equations},
author = {Pava, Jaime Angulo and Natali, Fábio},
year = {2014},
doi = {10.1515/anona-2014-0008},
journal   = {Advances in Nonlinear Analysis}
}