@misc{oai:repo.qst.go.jp:00068129,
 author = {Masuda, Shinichi and 益田 伸一},
 month = {Jul},
 note = {Relativistic electron scattering by a tightly focused high intense laser pulse in vacuum is studied by numerical simulation. The numerical simulations show that a high quality electron beam characterized be extremely short bunch length less than the laser wavelength, the energy spread less than 1 % for wide range of the laser parameters., 19th International Conference on Numerical Simulation of Plasmas and 7th Asia Pacific Plasma Theory Conference},
 title = {Subfemtosecond Electron Bunch Generation by Tightly Focused Laser Pulse},
 year = {2005}
}