J. M. Ngoko Djiokap, A. V. Meremianin, N. L. Manakov, S. X. Hu, L. B. Madsen, and Anthony F. Starace, ``Multistart spiral electron vortices in ionization by circularly polarized UV pulses,'' Phys. Rev. A 94, 013408 (2016).
J. M. Ngoko Djiokap, A. V. Meremianin, N. L. Manakov, S. X. Hu, L. B. Madsen, and Anthony F. Starace, ``Multistart spiral electron vortices in ionization by circularly polarized UV pulses,'' Phys. Rev. A 94, 013408 (2016).