@article{article050f0880,
title   = {The use of the Morse theory to estimate the number of nontrivial solutions of a nonlinear Schrödinger equation with a magnetic field},
author = {Alves, Claudianor Oliveira and Nemer, Rodrigo Cohen Mota and Soares, Sérgio Henrique Monari},
year = {2021},
doi = {10.3934/cpaa.2020276},
journal   = {Communications on Pure and Applied Analysis}
}