Part I. Theory 1. Electromagnetic radiation from a charged particle in a crystal: Qualitative consideration 1.1 Optical and X-ray Cherenkov radiation in uniform media 1.2 Pseudophoton spectrum of relativistic electron 1.3 Influence of a periodic crystal structure on the pseudophoton spectrum 1.4 PXR and Cherenkov radiation at diffraction conditions 1.5 Limitations of the kinematical theory...