00579naa#a2200169#i#450# EN\\bibl\42410 20251220163238.6 2658-3488 20210330b2021####ek#y0engy0150####ca RU MATHEMATICAL MODELING OF ENERGY SPECTRA FORMED AT ACCELERATING THE ELECTRONS BY RELATIVISTIC INTENSIVE GAUSSIAN AND LAGUERRE LASER PULSES Journal article Bryansk Bryansk State Technical University 2021 8 с. Journal article local Физика. 53 Shiryaev Oleg Borisovich zh-szf.ru