@article{articlefec5d847,
title   = {Coherent x radiation induced by relativistic electrons in crystals},
author = {Gavrikov, V B and Likhachev, Vladimir Petrovich and Arruda Neto, João Dias de Toledo},
year = {2003},
doi = {10.1103/physreva.68.024901},
journal   = {Physical Review A}
}