Avron, J.; Simon, B. Stability of gaps for periodic potentials under variation of a magnetic field. (English) Zbl 0586.35084 J. Phys. A 18, 2199-2205 (1985). MSC: 35Q99 35B10 35P15 35B37 × Cite Format Result Cite Review PDF Full Text: DOI
Levush, B.; Antonsen, T. M.; Manheimer, W. M.; Sprangle, P. A free-electron laser with a rotating quadrupole wiggler. (English) Zbl 0574.76125 Phys. Fluids 28, 2273-2281 (1985). MSC: 76X05 × Cite Format Result Cite Review PDF Full Text: DOI