@article{120346,
  author = {K Dholakia and N Simpson and M Padgett and L Allen},
  title = {Second Harmonic Generation and the Orbital Angular Momentum of Light},
  year = {1996},
  number = {54},
  month = {1996-01-01},
  publisher = {Physical Review A (Atomic, Molecular and Optical Physics)},
  language = {en},
}