@article{articlec5ae82a2,
title   = {Particle scattering and vacuum instability by exponential steps},
author = {Gavrilov, S. P. and Shishmarev, A. A. and Gitman, Dmitri Maximovitch},
year = {2017},
doi = {10.1103/PhysRevD.96.096020},
journal   = {PHYSICAL REVIEW D}
}