@article{article978431a0,
title   = {Semiclassical Description of Undulator Radiation},
author = {Shishmarev, A. A. and Levine, Alexandre and Bagrov, V. G. and Gitman, Dmitri Maximovitch},
year = {2021},
doi = {10.1134/S1063776121020072},
journal   = {Journal of Experimental and Theoretical Physics (JETP)}
}