@article{article10b66be8,
title   = {On the orbital instability of excited states for the NLS equation with the δ-interaction on a star graph},
author = {Pava, Jaime Angulo and Goloshchapova, Nataliia},
year = {2018},
doi = {10.3934/dcds.2018221},
journal   = {Discrete & Continuous Dynamical Systems - A}
}